zuhrah mohd sood, nik madihah nik-azis, badiah baharin, zulkfili md zainuddin, masfueh razali, haizal mohd hussaini.  (2022).  an insight into the role of periodontitis as a potential risk factor for development of erectile dysfunction.  - archives of orofacial sciences.  107-118. 

hau chun khoo, li yi lim, suzliza shukor, zainal adwin zainal abidin, zulkifli md zainuddin, xeng inn fam.  (2022).  initial experience of laparoscopic retroperitoneal partial nephrectomy in an academic hospital in malaysia.  - medical journal of malaysia.  764-767. 

azrul a.r.y., fam x.i. , zulkifli z. , lim l.y. , khoo h.c..  (2022).  safety and feasibility of ureteral stent placement under local anaesthesia using flexible cystoscopy among male patients in ukm medical centre : a pilot study.  - assessment of dissertation defense day (list of abstract).  8. 

norhazlina a wahab, huria d dardar, rosna yunus, zulkifli m zainudin, norfilza m mokhtar.  (2022).  silencing of hepsin and inosine 5-monophosphate dehydrogenase 2 by sirna reduces prostate cancer cells proliferation.  - malaysian journal of pathology.  29-38. 

zahra rashidbenam, mohd hafidzul jasman, guan hee tan, eng hong goh, xeng inn fam, christopher chee kong ho, zulkifli md zainuddin, reynu rajan, rizal abdul rani, fatimah mohd nor, mohamad aznan shuhaili, nik ritza kosai, farrah hani imran, min hwei ng.  (2021).  fabrication of adipose-derived stem cell-based self-assembled scaffold under hypoxia and mechanical stimulation for urethral tissue engineering.  - international journal of molecular sciences.  1-32. 

mohd hafidzul bin jasman;zulkifli bin md. zainuddin;goh eng hong;ng min hwei;fam xeng inn;tan guan hee;reynu a/p rajan;nik ritza kosai bin nik mahmood;mohamad aznan bin shuhaili;fatimah binti mohd nor.  (2020).  exploring the role of modified adipose derived stem cell-based self-assembled scaffold in the engineering of full thickness human urethra.  - .  . 

aida kalok, shalisah sharip, abdul muzhill abdul hafizz, zulkifli md zainuddin, mohamad nasir shafiee.  (2020).  the psychological impact of movement restriction during the covid-19 outbreak on clinical undergraduates: a cross-sectional study.  - international journal of environmental research and public health.  1-13. 

li yi lim, guan hee tan, zulkifli md zainuddin, xeng inn fam, eng hong goh, othman syazarina syaris, azyani yahaya, praveen singam.  (2020).  prospective evaluation of using multiparametric magnetic resonance imaging in cognitive fusion prostate biopsy compared to the standard systematic 12-core biopsy in the detection of prostate cancer.  - urology annals.  276-282. 

salah abood salem, zahra rashidbenam, mohd hafidzul jasman, christopher chee kong ho, ismail sagap, rajesh singh, mohd reusmaazran yusof, zulkifli md. zainuddin, ruszymah bt haji idrus & min hwei ng.  (2020).  incorporation of smooth muscle cells derived from human adipose stem cells on poly(lactic-co-glycolic acid) scaffold for the reconstruction of subtotally resected urinary bladder in athymic rats.  - tissue engineering and regenerative medicine.  553-563. 

fattah hamid, zainal adwin abidin, firdaus hayati, fam xeng inn, zulkifli zainuddin.  (2019).  skeletal metastases in renal cell carcinoma: a peculiar occurrence after treatment and long term remission.  - gazi medical journal.  311-312. 

nabil mohammad azmi, fam xeng inn, zulkifli md. zainuddin.  (2019).  penilaian latihan pundi kencing sebagai rawatan langkah pertama bagi gejala kencing disebabkan pembesaran prostat.  - surgical research day 2019.  10. 

ng chirk jenn, zakiah bt mohd said, norzakiah mohd tahir, teo chin hai (editors)jamaluddin aziz, tong seng fah, zulkifli md zainuddin (expert contributor).  (2019).  national men's health plan of action malaysia 2018-2023.  - .  38. 

lai jun han, zainal adwin abidin, fam xeng inn, hadfizul jasman, zulkifli zainuddin.  (2019).  urinary bladder perforation by ventriculoperitoneal shunt manifested as spontaneous per- urethral extrusion of shunt catheter.  - gazi medical journal.  320-322. 

zainal adwin, deven aragena, fam xeng inn, zulkifli zainuddin.  (2019).  retroperetoneoscopic nephrectomy: a beginner's experience.  - international journal of urology.  196-197. 

nurul syahirah aziz jaafar, kok-sing lim, muhammad khairol annuar zaini, harith ahmad, suhaila sepeai, guan hee tan, geok chin tan, zulkifli md. zainuddin.  (2019).  the surgical ablation on soft tissues using ho:yag laser with deviated beam fibe.  - optical fiber technology.  1-5. 

suzliza shukor, fam xeng inn, zulkifli zainuddin.  (2019).  transrectal ultrasound-guided biopsy and prostate cancer detection: a single-centre study in kuala lumpur, malaysia.  - international journal of urology.  185-186. 

loo guo hou, lim li yi, zulkifli zainuddin, fam xeng inn.  (2019).  staged resection in the management of hiv-related anogenital giant condyloma acuminatum. a case report.  - annals of medicine and surgery.  73-76. 

fam xeng inn, nurzarina ahmed, loo guo hou, zainal adwin zainal abidin, lim li yi, zulkifli md. zainuddin.  (2019).  intravesical stent position as a predictor of quality of life in patients with indwelling ureteral stent.  - international urology and nephrology.  1949-1953. 

zahra rashidbenam, mohd hafidzul jasman, pezhman hafez, guan hee tan, eng hong goh, xeng inn fam, christopher chee kong ho, zulkifli md zainuddin, reynu rajan, fatimah mohd nor,mohamad aznan shuhaili, nik ritza kosai, farrah hani imran, min hwei ng.  (2019).  overview of urethral reconstruction by tissue engineering: current strategies, clinical status and future direction.  - tissue engineering and regenerative medicine.  365-384. 

zainal adwin za, wan omar wd, h jaman, z zainuddin.  (2018).  endoscopic combined intrarenal surgery ecirs a beginners experience.  - 27th malaysian urological conference.  . 

zahra rashidbenam, mohd hafidzul jasman, guan hee tan, eng hong goh, fam xeng inn, christopher chee kong ho, zulkifli md zainuddin, angela min hwei ng.  (2018).  exploring the role of modified adipose derived stem cell-based self assembled scaffold in the engineering of full thickness human urethra.  - 5th termis world congress.  . 

zainal adwin zainal abidin, firdaus hayati, guan hee tan, eng hong goh, jasman hafidzul, md zainuddin zulkifli.  (2018).  giant urethral calculus without acute urinary retention.  - journal of the college of physicians and surgeons--pakistan : jcpsp.  . 

zahra rashidbenam, mohd hafidzul jasman, reynu rajan, fatimah mohd nor, guan hee tan, eng hong goh, xeng inn fam, christopher chee kong ho, mohamad aznan shuhaili, nik ritza kosai, zulkifli md zainuddin, min hwei ng.  (2018).  hypoxic preconditioning of adipose-derived mesencymal stem cells upregulates expression of extracellular matrix proteins.  - regenerative research.  . 

za zainal adwin, wd wan omar, h jasman, z zainuddin.  (2018).  endoscopic combined intrarenal surgery ecirs a beginners experience.  - british journal of urology international.  11. 

suria hayati md pauzi, siti aishah che md ali, nurhayati munawer, zulkifli md zainudin, rohaizat hassan.  (2018).  expression of cxcl 16 in renal cell carcinoma and its correlation with prognostic clinicopathological parameters.  - international congress of pathology & laboratory medicine (icpalm) 2018.  . 

zainal adwin, suzliza shukor, hafidzul jasman, zulkifli zainuddin.  (2018).  prophylactic ureteral stents in colectomies: is it really required?.  - british journal of urology international.  . 

jh lai , za zainal adwin , xi fam, j hafidzul, gh tan , eh goh, mz zulkifli.  (2017).  urinary bladder perforation by ventriculoperitoneal shunt manifested as spontaneous perurethral extrusion of shunt catheter: a rare complication.  - british journal of urology international.  31. 

g prem, eh goh, xi fam, gh tan, h jasman, za zainal adwin, z zainuddin.  (2017).  a rare presentation of urinary tract symptoms in a teenager zinners syndrome.  - british journal of urology international.  33. 

fam xeng inn, nurzarina ahmed, mohd hafidzul jasman, tan guan hee, goh eng hong, zulkifli zainuddin.  (2017).  intravesical stent position as a predictor of quality of life in patients with indwelling ureteral stent.  - 15th urological association of asia congress.  . 

mohd rohaizat hassan, mohd fadhli samsuri, shamsul azhar shah, nazarudin safian, zulkifli md zainuddin, hasanain faisal ghazi.  (2017).  prevalence of premature ejaculation and erectile dysfunction and their associated factors among urban and rural population of malaysia.  - malaysian journal of public health medicine.  86-96. 

tan gh, elsa jr, fam xi, shukor na, goh eh, praveen s, ho cck, zulkifli mz.  (2017).  a rare case of scrotal basal cell carcinoma in the presence of metastatic squamous cell carcinoma of the external auditory meatus and its management strategy.  - medicine & health.  113-117. 

guan hee tan, shamsul azhar shah, nurayub md ali, eng hong goh, praveen singam, christopher chee kong ho, zulkifli md zainuddin.  (2017).  urethral strictures after bipolar transurethral resection of prostate may be linked to slow resection rate.  - investigative and clinical urology.  186-191. 

nurul nurliana baharudin, suzana shahar, zulkifli md. zainuddin.  (2017).  dietary and lifestyle factors and its risk to kidney stone disease: a case control study at ukm medical centre.  - jurnal sains kesihatan malaysia.  113-130. 

nur azurah abdul ghani, lim pei shan, ani amelia zainuddin, ng beng kwang, adli ali, aqmar suraya, asyraf, majmin othman, zulkifli zainnuddin.  (2017).  jalinan ukm tambunan.  - impak.  33. 

siti nadirah hafidzin, zulkifli md zainuddin.  (2016).  bantu pasangan cari `keberanian`.  - harian metro.  1. 

siti airunnisa alaui, zulkifli md zainuddin.  (2016).  jangan malu mengaku mati pucuk.  - utusan malaysia.  . 

nor afzan mohamad yusof, zulkifli md zainuddin.  (2016).  kurang ereksi mungkin bukan mati pucuk.  - berita harian 22 april 2016.  16-17. 

maisarah mohamad, norhazlina abdul wahab, rosna yunus, nor azian abdul murad, zulkifli md zainuddin, murali sundaram, norfilza mohd mokhtar.  (2016).  roles of microrna-21 and microrna-29a in regulating cell adhesion related nenes in bone metastasis secondary to prostate cancer.  - asia pacific journal of cancer prevention.  3437-3445. 

zulkifli md zainuddin.  (2016).  awasi ubat tiruan : kandungan bahan tidak tepat.  - berita harian : sihat.  4-5. 

guan hee tan, zulkifli md zainuddin, xeng inn fam, eng hong goh, christopher ho, praveen singam, azuan nik, taranjit kaur.  (2016).  prostate size and dimensions of 600 southeast asian men aged 40 to 70 years old.  - international journal of urology.  5-6. 

eng h goh, m rusdi a rahman, praveen singam, chris c ho, guan h tan, hafidzul jasman, xeng i fam, bahrulhisham bahadzor, zulkifli m zainuddin.  (2015).  pain score during ureteric stenting using rigid cystoscopy for female: comparison between lignocaine-phenylephrine spray versus lignocaine gel as a local anaesthetic agent.  - the 103rd annual meeting of the japanese urological association.  . 

fam xeng inn, praveen singam, christopher ho chee kong, radhika sridharan, rozita hod, badrulhisham bahadzor, goh eng hong, tan guan hee, zulkifli zainuddin.  (2015).  ureteral stricture formation after ureteroscope treatment of impacted calculi: a prospective study.  - korean journal of urology.  e8. 

ho c, akhavanmalyeri a, jasman mh, tan gh, singam p, goh eh, bahadzor b, md zainuddin z.  (2015).  testosterone level predicts outcome of phosphodiesterase-5 inhibitor treatment.  - journal of sexual medicine.  236. 

saadiah ismail, zulkifli md zainuddin.  (2015).  bahana beli ubat palsu rawat mati pucuk.  - berita harian 21/12/2015.  . 

ho c, ahmad nazir n, md zainuddin z.  (2015).  improvement in both lower urinary tract symptoms and erectile function with alpha blocker therapy in benign prostatic hyperplasia.  - journal of sexual medicine.  253. 

mariatul khatiah, zulkifli md. zainuddin.  (2015).  khatan beramai-ramai ada risiko.  - harian metro.  . 

praveen singam, goh eng hong, christopher ho, tan guan hee, hafidzul jasman, fam xeng inn, badrulhisham bahadzor, azmi tamil, zulkifli zainuddin.  (2015).  nocturia in patients with benign prostatic hyperplasia: evaluating the significance of ageing, co-morbid illnesses, lifestyle and medical therapy in treatment outcome in real life practice.  - the aging male.  112-117. 

mohd hafidzul jasman, tan guan hee, fam xeng inn, goh eng hong, christopher ho, praveen singam, badrulhisham bahadzor, zulkifli zainuddin.  (2015).  chronic prostatitis in malaysia - prevalence and correlation.  - the 103rd annual meeting of the japanese urological association.  . 

eh goh, man ali, hx lee, s praveen, cck ho, gh tan, h jasman, xi fam, b bahadzor, zmd zainuddin.  (2015).  the optimal anatomical site to deliver anaesthetic agent during flexible cystoscopy.  - bju international.  40. 

nenny noorina saaid, reena rahayu md zin, siti aishah md ali, sharifah noor akmal syed hussain, zulkifli zainuddin & zubaidah zakaria.  (2014).  array comparative genomic hybridization analysis identified the chromosomal aberrations and putative genes involved in prostate tumorigenesis of malaysian men.  - sains malaysiana.  1317-1326. 

sharifa ezat w.p, syed aljunid. noraziani k, zafar a, saperi s., azimatun n.a, fuad i, norlia a., zulkifli m.z, abdul yazid m.k., nor hazla m.h., lau fen n., zabedah o., nor aina e., murali s., ....  (2014).  breast and prostate cancer with bone metastases: patients` cost for treatment and care.  - 1st international conference on health financing.  . 

sharifa ezat wp, syed mohamed aljunid sj, noraziani k, zafar a, saperi s, amrizal mn, azimatun na, fuad i, norlia a, zulkifli mz, abdul yazid mk, nor hazla mh, lau fn, zabedah o, nor aina e, murali s,.  (2014).  breast and prostate cancer with bone metastases: patients cost for treatment and care.  - 4th international public health conference.  . 

christopher ho ck, teo ch, ng cj, zulkifli mz, tan hm.  (2014).  asian men`s health: gender disparity and life expectancy.  - journal of surgical academia.  5-8. 

c.c.k. ho, k.s. ngoo, a.h hamzaini, a.m.m. rizal, m.z. zulkifli.  (2014).  urinary bladder characteristics via ultrasound as predictors of acute urinary retention in men with benign prostatic hyperplasia.  - clinica terapeutica.  165(2):. 

e.h. goh , f.a.b. zainal ulum, p. singam, c.c.k. ho, g.h. tan, m.h. jasman, b. bahadzor and z.m. zainuddin.  (2013).  pain score of transrectal ultrasonographic (trus) biopsy of the prostate. the effects of patient watching the monitor during the procedure.  - bju international.  111(Supp 1):44-45. 

cck ho, k krishna, mz zulkifli.  (2013).  withdrawal of alpha blocker therapy following initial combination therapy with 5 alpha-reductase inhibitor (5ari) dutasteride for benign prostatic hyperplasia: a randomized controlled trial on efficac.  - bju international.  111(Suppl 3):57. 

mohamad rodi isa, foong ming moy, azad hassan abdul razack, zulkifli md zainuddin, nur zuraida zainal.  (2013).  anxiety status and its relationship with general health related quality of life among prostate cancer patients in two university hospitals in kuala lumpur, malaysia.  - iranian journal of public health.  42(3):240-248. 

salem, salah abood; hwei, ng min; bin saim, aminuddin; ho, christopher c. k.; sagap, ismail; singh, rajesh; yusof, mohd reusmaazran; zainuddin, zulkifili md; idrus, ruszymah bt. hj.  (2013).  polylactic-co-glycolic acid mesh coated with fibrin or collagen and biological adhesive substance as a prefabricated, degradable, biocompatible, and functional scaffold for regeneration of the urinary.  - journal of biomedical materials research - part a.  101A(8)2237-2247:. 

christopher c.k. ho, salah abood salem, min hwei ng, ismail sagap, ruszymahhj idrus, zulkifli md zainuddin.  (2013).  polylactic-co-glycolic acidplga mesh coasted with fibrin or collagen and biological adhesive substance as a prefabricated, degradable, and biocompatible and functional scafford for regeneration of uri.  - anz journal of surgery.  83(Suppl. 1):50. 

christopher c.k ho, zulkifli md zainuddin.  (2013).  clinicopathological features of bladder tumours in a single institution in malaysia.  - anz journal of surgery.  83(Suppl 1):100. 

g.h. tan, c.c.k. ho, b. bahadzor, s. praveen, e.h. goh, a.r. afdzillah, m.z. zulkifli.  (2013).  an unusual cause of a penetrating injury to the anterior urethra: a thorny situation.  - clinica terapeutica.  164 (1):31-33. 

tan hui meng, ng chirk jenn, zulkifli md zainuddin, khoo ee ming, tong seng fah, low wah yun, christopher ho chee kong, verna lee, george lee, lee boon cheok, ong teik aik.  (2013).  connecting with generation x & y: practical tips to improve men`s health.  - .  39. 

norhazlina abdul wahab, maisarah mohamad, zulkifli md zainuddin, rosna yunus, murali sundaram, rahman jamal, norfilza mohd mokhtar.  (2013).  roles of microrna-21 and micro-29a in regulating cell adhesion-related genes in development of bone metastasis secondary to prostate cancer.  - 8th malaysia indonesia brunei medical sciences conference.  . 

tan gh, shamsul as, ho sa, nurhafizah sh, lim cs, nurudin aag, praveen s, ho cck, goh eh, bahadzor b, zulkifli mz.  (2013).  stratifying patients with haematuria into high or low risk groups for bladder cancer: a novel clinical scoring system.  - asian pacific journal of cancer prevention.  14(11):6327-6330. 

g.h. tan, c.c.k. ho, b. bahadzor, s. praveen, e.h. goh, a.s. syahril, m.z. zulkifli.  (2013).  bilateral emphysematous pyelitis: a rare encounter in urology.  - clinica terapeutica.  164(4):319-321. 

tan hui meng, chris ho chee kong, zulkifli md zainuddin, lee boon cheok.  (2013).  men`s health and the prostate.  - .  134. 

salah abood salem, angela ng min hwei, christopher ck ho, ismail sagap, ruszymah hj idrus, zulkifli md zainuddin.  (2013).  human adipose tissue derived stem cells as a source of smooth muscle cells in the regeneration of muscular layer of urinary bladder wall.  - malaysian journal of microscopy.  9:149-153. 

osman syazarina sharis, md zainuddin zulkifli, abdul hamid hamzaini.  (2013).  predicting outcome of trial of voiding without catheter in acute urinary retention with intravesical prostatic protrusion.  - malaysian journal of medical sciences.  20(1):56-59. 

salah abood salem, angela ng min hwei, aminuddin bin saim, christopher c.k ho, ismail sagap , rajesh singh, mohd reusmaazran yusof, zulkifili md zainuddin, ruszymah bt.hj idrus.  (2013).  in vivo implantation of composite scaffold for regeneration of urinary bladder wall via tissue engineering technology.  - termis-ap 2013 annual conference.  . 

salah abood salem, angela ng min hwei, aminuddin saim, christopher ho chee kong, ismail sagap, rajesh singh, mohd reusmaazran yusof, zulkifili md zainuddin, ruszymah hj idrus.  (2013).  human adipose tissue derived stem cells as a source of smooth muscle cells in the regeneration of muscular layer of urinary bladder wall.  - malaysian journal of medical sciences.  20(4):78-85. 

sharifa wan puteh ezat, syed mohamed aljunid syed junid, noraziani khamis, zafar ahmed, saperi sulong, amrizal muhammad nur, azimatun noor aizuddin, fuad ismail, norlia abdullah, zulkifli md, ....  (2013).  skeletal-related events among breast and prostate cancer patients: towards new treatment initiation in malaysia`s hospital setting.  - asian pacific journal cancer prevention.  14(5):3357-3362. 

christopher chee kong ho, poh keat seong, zulkifli md zainuddin, mohd rizal abdul manaf, muhilan parameswaran, azad ha razack.  (2013).  retrospective study of predictors of bone metastasis in prostate cancer cases.  - asian pacific journal of cancer prevention.  14(5):2203-2206. 

zainuddin, zm.  (2012).  update in hormonal replacement therapy.  - international journal of urology.  19(Supp.1):118. 

fam xeng inn, farrah-hani imran, mohd faizal ali, rizuana ih, zulkifli z.  (2012).  penile augmentation with resultant foreign material granuloma and sequalae.  - malaysian journal of medical sciences.  19(4):82-84. 

hans alexander mahendran, praveen singam, christopher ho, goh eng hong, tan guan hee, zulkifli md zainuddin.  (2012).  iatrogenic ureter injuries: eleven years experience in a tertiary hospital.  - medical journal of malaysia.  67(2):169-172. 

praveen singam, badrulhisham bahadzor, azlina abas, christopher ho, goh eng hong, tan guan hee, zulkifli zainuddin.  (2012).  re-validation of the vienna nomogram for trans-rectal ultrasound biopsy (trus) of prostate.  - medical journal of malaysia.  67(2):243. 

salah abood salem, angela ng min hwei, aminudding bin saim, christopher ck ho, rajesh sing, mohd reusmaazran yusof, ismail sagap, zulkifli md, zainuddin, ruszymah bt hj idrus.  (2012).  combined plga with fibrin as a prefabricated, degradable and biocompatible scaffold for the regeneration of urinary bladder wall.  - 4th national conference on laboratory animal science.  . 

christopher chee kong ho, teo chee yang, phang lay fang, nur aziyana noor azizi, farah lyna darwin, nur afifah mohd ghazi, guan hee tan, eng hong goh, praveen singam, badrulhisham bahadzor, zulkifli m.  (2012).  prevalence and risk factors associated with overactive bladder.  - urotoday international journal.  5(1). 

christopher c.k. ho, seng fah tong, wan yun low, chirk jenn ng, ee ming khoo, verna k.m. lee, zulkifli md zainuddin and hui meng tan.  (2012).  a randomized, double-blind, placebo-controlled trial on the effect of long-acting testosterone treatment as assessed by the aging male symptoms scale.  - bju international.  110(2):260-265. 

eng hong goh, akhavan adel, praveen singam, christopher chee kong ho, guan hee tan, badrulhisham bahadzor, zulkifli md zainuddin, isa mohamed rose.  (2012).  lymphoepithelioma-like carcinoma of the bladder: is the prognosis different from conventional bladder carcinoma?.  - urotoday international journal.  5(1):art 84.. 

eng hong goh, mohamed abdikarim nur ali, praveen singam, christopher chee kong ho, guan hee tan, mohd hafidzul jasman, badrulhisham bahadzor, zulkifli md zainuddin, srijit das.  (2012).  the optimal anatomical site to deliver anaesthetic agent during flexible cystoscopy.  - 21st malaysian urological conference.  . 

eng hong goh, falah akmal bin zainal ulum, praveen singam, christopher chee kong ho, guan hee tan, mohd hafidzul jasman, badrulhisham bahadzor, zulkifli md zainuddin.  (2012).  pain score of transrectal ultrasonographic (trus) biopsy of the prostate. the effects of patient watching the monitor during the procedure.  - malaysian-scottish urological conference in conjunction with the 4th asian ans european schools of urology teaching course.  . 

eng hong goh, muhammad rusdi abdul rahman, praveen singam, christopher chee kong ho, guan hee tan, mohd hafidzul jasman, badrulhisham bahadzor, zulkifli md zainuddin.  (2012).  pain score during ureteric stenting using rigid cystoscopy for female: comparison between lignocaine-phenylephrine spray versus lignocaine gel as a local anaesthetic agent.  - 21st malaysian urological conference.  . 

mohd h. dayang a, zulkifli m, tan h.  (2012).  a prospective, randomised controlled trial, comparing sutureless cyanoacrylate apposition with conventional sutured circumcision.  - international journal of urology.  19(S1):69. 

m.z. zulkifli, c.c.k. ho, e.h. goh, s. praveen, s. das.  (2012).  ureteric stone in the presence of existing backache: lessons to learn.  - clinica terapeutica.  163(1):23-25. 

zainuddin, zm.  (2012).  oab in asian men.  - international journal of urology.  19(Supp.1):52. 

christopher c.k. ho, seng fah tong, wah yun low, chirk jenn ng, ee ming khoo, verna k.m. lee, zulkifli md. zainuddin, hui meng tan.  (2012).  a randomised double blind placebo-controlled trial assessing quality of life via aging male symptoms (ams) scale after treatment with intramuscular long-acting testosterone.  - journal of sexual medicine.  9(suppl 2): 144. 

tan gh, shamsul as, ho sa, nurhafizah sh, lim cs, nurudin aag, praveen s, ho cck, goh eh, jasman h, bahadzor b, zulkifli mz.  (2012).  identifying patients with haematuria at higher risk of bladder cancer: a novel clinical scoring system.  - 21st malaysian urological conference.  . 

christopher ck ho, tan guan hee, goh eng hong, praveen singam, badrulhisham bahadzor, zulkifli md zainuddin.  (2012).  outcomes and safety of retrograde intra-renal surgery for renal stones less than 2 cm in size.  - nephro-urology monthly.  4(2):454-457. 

cck ho, b bahadzor, gh tan, goh p singam and mz zulkifli.  (2012).  overactive bladder in a tertiary centre - prevalence and assessment of risk factors.  - bju international.  109 (Supplement 4): 30-31. 

christopher c k ho, tan guan hee, goh eng hong, praveen singam, badrulhisham bahadzor, zulkifli md zainuddin.  (2012).  outcome and safety of retrograde intra-renal surgery for stones less than 2cm.  - medical journal of malaysia.  67(2):246. 

ng k l, ho c c k, sivaprakasam s, zainuddin zm, razack a h.  (2012).  outcome of acute scrotum cases in 2 large tertiary urological centres in kuala lumpur.  - medical journal of malaysia.  67(2):248. 

gh tan, m azrif, as shamsul, cck ho, s praveen, eh goh, b bahadzor, f ismail, mz zulkifli.  (2012).  clinicopathological features and survival of testicular tumours in a southeast asian university hospital: a 10-year review.  - medical journal of malaysia.  67(2):241. 

muhammad akbar, praveen s, christopher hck, goh eh, swaminathan, zulkifli mz.  (2012).  inflamatory pseudotumor of the bladder: a histopathological diagnostic challenge from its malignant variant.  - journal of surgical academia.  2(1):46-49. 

cck ho, tw khor, p singam, eh goh, gh tan, b bahadzor, mz zulkifli.  (2012).  evaluation of power doppler ultrasonography for prostate biopsy in men with elevated serum prostate specific antigen levels.  - clinica terapeutica.  163(3):205-208. 

eh goh, praveen s, cck ho, gh tan, badrulhisham b, zulkifli mz.  (2012).  trus biopsy protocol (english version).  - .  . 

eh goh, praveen s, cck ho, gh tan, badrulhisham b, zulkifli mz.  (2012).  persedian untuk trus biopsy.  - .  . 

eh goh, praveen s, cck ho, gh tan, badrulhisham b, zulkifli mz.  (2012).  trus biopsy protocol (chinese).  - .  . 

eng hong goh, praveen singam, christopher ho chee kong, guan hee tan, badrulhisham bahadzor, zulkifli md zainuddin.  (2012).  intravesical bcg protocol.  - .  . 

christopher c.k. ho, poh k, muhilan p, azad, h, goh e, praveen s, tan g, badrulhisham b, zulkifli m.  (2012).  a retrospective study of predictors of bone metastasis in prostate cancer.  - international journal of urology.  19: S362. 

keat seong poh, christopher chee kong ho, zulkifli md zainuddin.  (2012).  chronic ketamine abuse associated with cholestasis and cholangitis: a case report.  - urotoday international journal.  5(5):art 51. 

eh goh, praveen s, cck ho, gh tan, badrulhisham b, zulkifli mz.  (2012).  pemberitahuan tiub saluran getah (d-j uruteral stent) berada di saluran kencing dad buah pinggang ke pundi kencing.  - .  . 

cck ho, k-y ngoo, s praveen, e-h goh, and mz zulkifli.  (2011).  the usefulness of urinary bladder characteristics estimated by ultrasound as clinical predictors of acute urinary retention in men with benign prostatic hyperplasia.  - bju international.  107:7. 

suzana shahar, siti shafurah, nur suraiya abu hasan shaari, roslee rajikan, nor fadilah rajab, babak golkhalkhali, zulkifli md zainuddin.  (2011).  roles of diet, lifetime physical activity and oxidative dna damage in the occurrence of prostate cancer among men in klang valley, malaysia.  - asian pacific journal of cancer prevention.  12(3):605-611. 

christopher c.k. ho, noraini anuar, m.i. nurismah, praveen singam, goh eng hong, zulkifli md zainuddin.  (2011).  a rare case of renal and uterine clear cell carcinoma: which is the primary tumour?.  - central european journal of medicine.  6(2):247-249. 

farina md. yusof, praveen singam, christopher ho, goh eng hong, lee boon cheok, zulkifli zainuddin.  (2011).  life-threatening haematuria from a ruptured renal artery aneurysm.  - anz journal of surgery.  81(3):199-200. 

christopher c.k. ho, s. praveen, eh goh, mz zulkifli.  (2011).  common urological conditions.  - .  . 

ho cck, noraini a, nurisma mi, praveen s, goh eh, zulkifli mz.  (2011).  the enigma of synchronous renal and uterine clear cell carcinoma: which is the primary tumour?.  - urofair 2011.  . 

christopher ckh, goh eh, praveen s, zulkifli mz.  (2011).  periprostatic lidocaine infiltration versus transrectal lidocaine gel for local anaesthesia in transrectal ultrasound guided prostate biopsy.  - journal of surgical academia.  1(1):40-44. 

goh eh, akhavan a, ho cck, praveen s, tan gh, badrulhisham b, zulkifli mz, isa mr.  (2011).  lymphoepithelioma-like carcinoma of the bladder: a case report and review of literature.  - urofair 2011.  . 

goh eh, akhavan a, ho cck, praveen s, tan gh, fauzan ag, badrulhisham s, zulkifli mz, noraida m.  (2011).  myeloid sarcoma of the bladder: case report and literature review.  - urofair 2011.  . 

tan gh, afdzillah ar, praveen s, ho cck, goh eh, zulkifli mz.  (2011).  a case report of an unusual cause of penetrating penile urethral injury: its presentation, management and outcome.  - urofair 2011.  . 

johann fk, praveen s, christopher ckh, goh eh, razman j, zulkifli mz.  (2011).  extra-gonadal germ cell tumour ? what about the testis!.  - journal of surgical academia.  1(1):34-36. 

goh eh, christopher ckh, praveen s, tan gh, rozman z, zulkifli mz, badrulhisham b.  (2011).  nephrectomy for a case of intrarenal dermoid cyst: was it an appropriate decision?.  - journal of surgical academia.  1(1):30-33. 

christopher c.k ho, wan jasman jamaludin, eng hong goh, praveen singam, zulkifli md zainuddin.  (2011).  scrotal mass: a rare complication of ventriculoperitoneal shunt.  - acta medica (hradec králové).  54(2):81-82. 

christopher ck ho, praveen singam, goh eng hong and zulkifli md zainuddin.  (2011).  male sexual dysfunction in asia.  - asian journal of andrology.  13(4):537-542. 

christopher ck ho, hans alexander, praveen singam, lee boon cheok, zulkifli md zainuddin.  (2011).  iatrogenic bladder injury: a single institution`s ten-year experience in treatment and outcome 1999-2009, kuala lumpur, malaysia.  - colombia medica.  42(2): 215-218. 

eh goh, cck ho, p singam, gh tan, b bahadzor, z md zainuddin, s miwa, k shigehara, e koh, m namiki.  (2011).  "how do men handle their sexual of fertility illness?" - a preliminary comparison between men in two health institutions.  - journal of men`s health.  8(3):220. 

juriza i, ruzanna z, harlina hs, rohaizak m, zulkifli z, fauzi ma, m radniwan, m, razif, m heikal, anisah n, nabishah m, lokman s.  (2011).  outdoor camps experiential learning activities for teamwork and leadership among medical students.  - kongres pengajaran dan pembelajaran ukm, 2010; tanjung keling, melaka (procedia social and behavioural sciences).  . 

salah as, zulkifli mz, ho cck, ismail s, ng mh, ruszymah bhi.  (2011).  human adipose tissue derived stem cells as a source of smooth muscle cells in the regeneration of muscular layer of urinary bladder wall.  - medicine & health.  260. 

tan hm, tong sf, low wy, ng cj, khoo em, zainuddin zm, lee vkm.  (2011).  the effect of long acting testosterone treatment on aging male symtoms (ams) scale - a randomised double blind placebo control trial.  - european urology supplements.  10(2):129. 

salah as, angela ng mh, christopher ho ck, ismail s, ruszymah bhi, zulkifili mdz.  (2011).  combining radiographic, urodynamic and ultrasonographic techniques for the evaluation of urinary bladder structure and function in an animal model.  - journal of surgical academia.  1(2):25-32. 

eng hong goh, akhavan adel, praveen singam, christopher chee kong ho, guan hee tan, badrulhisham bahadzor, zulkifli md zainuddin, fauzah abdul ghani, noraidah masir.  (2011).  myeloid sarcoma of the bladder: case presentation and review of the literature.  - urotoday international journal.  4(5):1-5. 

ho c, khor t, singam p, goh e, tan g, bahadzor b, zainuddin z.  (2011).  power doppler ultrasonography- directed prostate biopsy in men with elevated serum prostate specific antigen levels.  - urology.  78(suppl 3A):S301. 

eng hong goh, putera mas pian, praveen singam, christopher chee kong ho, guan hee tan, badrulhisham bahadzor, zulkifli md zainuddin.  (2011).  an unusual cause of acute scrotum in a 65-year-old man.  - urotoday international journal.  4(6):71-4. 

gh tan, m azrif, as shamsul, cck ho, s praveen, eh goh, b bahadzor, f ismail, mz zulkifli.  (2011).  clinicopathological features and survival of testicular tumours in a southeast asian university hospital: a ten-year review.  - asian pacific journal of cancer prevention.  12(10):2727-30. 

eh goh, praveen s, cck ho, gh tan, zulkifli mz.  (2011).  common urology diseases.  - .  . 

gh tan, m azrif, as shamsul, cck ho, s praveen, eh goh, b bahadzor, f ismail, mz zulkifli.  (2011).  clinicopathological features and survival of testicular tumours in a southeast asian university hospital: a 10-year review  .  - the 5th regional conference of apocp.  . 

salah as, zulkifli mz, ho cck, ismail s, ng mh, ruszymah bhi.  (2011).  urinary bladder reconstruction using human adipose stem cells and biocompatible scaffold via tissue engineering technique.  - abstracts: tissue engineerieng research group: progress update.  . 

eh goh, cck ho, p singam, gh tan, b bahadzor, z md zainuddin, s miwa, k shigehara, e koh, m namiki.  (2011).  what are patients` reaction when being told "you have cancer"? a preliminary study comparing populations at two different institutions.  - journal of men`s health.  8(3):216. 

gh tan, m azrif, as shamsul, cck ho, s praveen, eh goh, b bahadzor, f ismail, mz zulkifli.  (2011).  clinicopathological features and survival of testicular tumours in a southeast asian university hospital: a ten-year review.  - 20th malaysian urological conference.  . 

ho cck, tong sf, low wy, ng cj, lee vkm, khoo em, zainuddin mz, tan hm.  (2011).  assessing quality of life via aging male symptoms (ams) scale after treatment with intramuscular long-acting testosterone.  - journal of sexual medicine.  8(suppl 5):403. 

christopher c.k. ho, tan guan hee, goh eng hong, praveen singam, badruhisham bahadzor, zulkifli md zainuddin.  (2011).  outcome and safety of retrograde intra-renal surgery for stones less than 2cm.  - 20th malaysian urological conference - asia pacific society of uro-oncology conference.  . 

nur ayub ma, bahadzor b, tan gh, ho cck, praveen s, goh eh, zulkifli mz.  (2011).  solitary functioning kidney with ureteric stricture: do not forget tuberculosis.  - 20th malaysian urology conference.  . 

syahril as, tan gh, ho cck, praveen s, goh eh, bahadzor b, zulkifli mz.  (2011).  bilateral emphysematous pyelitis in a patient with bilateral staghorn calculi.  - 20th malaysian urology conference.  . 

christopher ho ck, praveen s, goh eh, tan gh, badrulhisham b, zulkifli mz, khoo hw, su xv, ng jy, chong ll, lim dw, chen es, teoh sy.  (2011).  prevalence and awareness of lower urinary tract symptoms among males in the outpatient clinics of university kebangsaan malaysia medical centre.  - medicine & health.  98-106. 

azran a, tan gh, ho cck, praveen s, goh eh, bahadzor b, zulkifli mz.  (2011).  a challenging case of percutaneous nephrolithotripsy in a patient with staghorn stone, thoracolumbar kyphoscoliosis.  - 20th malaysian urological conference.  . 

ng kl, ho cck, sivaprakasam s, zainuddin zm, razack ah.  (2011).  outcome of acute scrotum cases in 2 large tertiary urological centres in kuala lumpur.  - 20th malaysian urological conference.  . 

c.c.k. ho, s.f. tong, w.y. low, c.j. ng, e.m. khoo, v.k. lee, m.z. zulkifli, h.m. tan.  (2011).  assessment of quality of life via the aging male symptoms (ams) scale after treatment with intramuscular long-acting testosterone.  - journal of men`s health.  8(3): 226. 

c.c.k. ho, c. ho, e.h. goh, p. singam, g.h. tan, b. bahadzor, z. md zainuddin.  (2011).  prevalence and awareness of lower urinary tract symptoms among males in the outpatient clinics of university kebangsaan malaysia medical centre.  - journal of men`s health.  8(3):208. 

tan hm, ng cj, low wy, khoo em, tong sf, lee vkm, lee bc, lee geg, zulkifli mz, ho cck, yap pk, ong ta, goh eh.  (2011).  managing men`s health.  - .  62. 

sharifuddin n, abdul aziz af, hamzah ms, abdul rashid r, zainuddin z, puteh swe, abdul hamid mz, aziz na,.  (2011).  a cross-sectional study of hypertensive outpatients to determine the necessity of asking about erectile dysfunction symptoms.  - south african family practice.  53(4):384-389. 

zulkifli md zainuddin.  (2011).  buah zakar berpintal.  - berita harian.  . 

salah, as, zulkifli mz, ho cck, ismail s, ng mh, ruszymah bhi.  (2011).  confocal and light microscopy evaluation of human adipose tissue derived stem cells differentiated to smooth muscle cells for the regeneration of urinary bladder wall.  - 20th scientific conference of the electron microscopy society of malaysia.  . 

zulkifli md zainuddin.  (2011).  risiko warisi barah prostat.  - berita harian.  . 

ho c c k, hafidzul j, praveen s, goh e h, bong j j, lee b c, zulkifli m z.  (2010).  retrograde intrarenal surgery for renal stones smaller than 2 cm.  - singapore medical journal.  51(6):512-515. 

ch chee kong , i mohamed rose, p singam, g eng hong, l boon cheok and zm zainuddin.  (2010).  angiomyolipoma of the adrenal gland: a case report.  - iranian red crescent medical journal.  12(4):489-491. 

christopher chee kong ho, hafez pezhman, singam praveen, eng hong goh, boon cheok lee, md zainuddin zulkifli, mohamed rose isa.  (2010).  ketamine-associated ulcerative cystitis: a case report and literature review.  - malaysian journal of medical sciences.  61-65. 

mahendran ha, praveen s, christopher ho chee kong, goh eh, lee bc, zulkifli z.  (2010).  iatrogenic ureteric injuries: a retrospective review of 20 cases managed in a single institution.  - annual general meeting & annual scientific meeting, college of surgeons, academy of medicine of malaysia.  . 

christopher ho chee kong, praveen singam, goh eng hong, lee boon cheok, muhammad azrif, azmi mohd tamil, zulkifli md zainuddin.  (2010).  clinicopathological features of bladder tumours in a single institution in malaysia.  - asian pacific journal of cancer prevention.  11(1):149-152. 

praveen s, christopher hcc, goh eh, azriff m, azmi mt, lee bc zulkifli z.  (2010).  a ten year audit on renal cancer from a single malaysian institution.  - singapore urofair 2010.  . 

goh eh, ho cck, praveen s, lee bc, zulkifli mz, azrif m.  (2010).  a 7-year review of prostatic carcinoma diagnosed by trus biopsy in a single institution.  - urofair 2010: annual scientific meeting.  . 

ho cck, praveen s, goh eh, lee bc, muhammad-azrif aa, zulkifli mz.  (2010).  a five year audit on clinicopathological features of bladder tumour in a single institution.  - urofair 2010.  . 

zulkifli md zainuddin.  (2010).  bengkok bawah padah.  - berita harian.  . 

christopher ho chee kong, hans alexander, praveen singam, lee boon cheok, zulkifli md zainuddin.  (2010).  iatrogenic bladder injury: a single institution`s experience in treatment and outcome.  - international journal of urology.  17(Suppl 1):A328-A329. 

zulkifli md zainuddin.  (2010).  pil kuda bawa mudarat.  - berita harian.  . 

c c k ho, k k krishna, s praveen, e h goh, b c lee, m z zulkifli.  (2010).  proptosis: a rare presentation of metastatic renal cell carcinoma.  - medical journal of malaysia.  65(3):58-59. 

goh eng hong, christopher ho chee kong, praveen singam, lee boon cheok, zulkifli md zainuddin, muhammad azrif.  (2010).  seven-year review of prostate carcinomas diagnosed by trus biopsy in a single malaysian institution.  - asian pacific journal of cancer prevention.  11(5):1351-1353. 

praveen s, rafidah s, goh eh, christopher h, zulkifli z.  (2010).  epididymo-orchitis in an undescended testis: a rare complication.  - 19th malaysian urological conference.  . 

praveen singam, leny suriani md, christopher ho, goh eng hong, lee boon cheok, zulkifli zainuddin.  (2010).  primary sclerosing lipogranuloma: an unusual scrotal mass.  - 19th malaysian urological conference.  . 

praveen s, farina my, lee ch, christopher h, goh eh, zulkifli z.  (2010).  chronic calyceal-cutaneous fistula: a rare complication of residual renal calculus.  - 19th malaysian urological conference.  . 

nor faezan ar, praveen s, goh eh, christopher ho, zulkifli z.  (2010).  spontaneous rupture of renal pelvis secondary to small ureteric stone: a case report.  - 19th malaysian urological conference.  . 

christopher ho chee kong, krishna kumar, praveen singam, goh eng hong, zulkifli md zainuddin.  (2010).  proptosis: a red herring for metastatic renal cell carcinoma?.  - 19th malaysian urological conference.  . 

christopher c.k ho, praveen singam, goh eng hong, zulkifli md zainuddin.  (2010).  surgical aspects of renal transplantation and organ donation.  - .  . 

christopher c.k. ho, yugasaravanan khandasamy, praveen singam, eng hong goh and zulkifli m. zainuddin.  (2010).  encrusted and incarcerated urinary bladder catheter: what are the options?.  - libyan journal of medicine.  5:5686. 

zulkifli md zainuddin.  (2010).  beza air mani, mazi.  - berita harian.  . 

cck ho, eh goh, s praveen, bc lee, mz zulkifli.  (2010).  periprostatic lidocaine infiltration versus transrectal lidocaine gel for local anaesthesia in transrectal ultrasound guided prostate biopsy.  - journal of men`s health.  7(3):294. 

a s salah, m h ng, m z zulkifli, c c k ho, s ismail and bhi ruszymah.  (2010).  different assessment modalities (radiography, urodynamic, ultrasonography) or the evaluation of urinary bladder reconstruction.  - medical journal of malaysia.  65(2) Supple B:34. 

christopher ho chee kong, siti aishah md ali, praveen singam, goh eng hong, lee boon cheok, zulkifli md zainuddin.  (2010).  spontaneous bladder perforation: a rare complication of tuberculosis.  - international journal of infectious diseases.  14S: e250-e252. 

praveen singam, leny suriyani, christopher ho, goh eng, hong and zulkifli zainuddin.  (2010).  primary sclerosing lipogranuloma: an unusual scrotal mass.  - libyan journal of medicine.  5:5524. 

goh eng hong, praveen singam, christopher ho, prof zulkifli zainuddin.  (2010).  hormonal therapy in prostatic carcinoma.  - .  . 

praveen singam, christopher ho, goh eng hong, prof zulkifli md zainuddin.  (2010).  a presentation on bph and its management.  - .  . 

praveen singam, christopher ho, goh eng hong, azrif mohd, azmi md tamil, lee boon cheok, zulkifli zainuddin.  (2010).  clinical characteristics of renal cancer in malaysia : a ten year review.  - asian pacific journal of cancer prevention.  11(2): 503-6. 

zulkifli md zainuddin.  (2010).  cecair kuning keluar bersama mazi.  - berita harian.  . 

zulkifli md zainuddin.  (2010).  risau kuat berpeluh.  - berita harian.  . 

zulkifli md zainuddin.  (2010).  zakar tidak terangsang.  - berita harian.  . 

em khoo, sf tong, wah yun low, bc lee, vkm lee, cj ng, z zulkifli, hm tan..  (2010).  health care utilization in men with erectile dysfunction: results of the subang aging male (sam) study.  - journal of sexual medicine.  7(suppl 2):106. 

sf tong, em khoo, wy low, bc lee, vkm lee, cj ng, z zukifli, hm tan.  (2010).  the health seeking behaviour of men with erectile dysfunction: results of the subang aging male (sam) study.  - journal of sexual medicine.  7(suppl 2):106. 

zulkifli md zainuddin.  (2010).  kencing tak lawas.  - berita harian.  . 

zulkifli md zainuddin.  (2010).  seks bantu proses pulih minda suami isteri.  - berita harian.  . 

zulkifli md zainuddin.  (2010).  ketulan tanda kanser buah zakar.  - berita harian.  . 

zulkifli md zainuddin.  (2010).  bakal pengantin resah buah zakar senak.  - berita harian.  . 

zulkifli md zainuddin.  (2010).  suami runsing masalah penetrasi.  - berita harian.  . 

zulkifli md zainuddin.  (2010).  gara-gara mahu besar.  - berita harian.  . 

zulkifli md zainuddin.  (2010).  remaja murung kurang ciri seksual sekunder lelaki.  - berita harian.  . 

christopher ho chee kong, zulkifli md zainuddin.  (2009).  alum irrigation for the treatment of intractable haematuria.  - malaysian journal of medical sciences.  16(4):66-68. 

nenny ns, siti-aishah ma, reena mz, zulkifli mz, rohaizak m, dan zubaidah z..  (2009).  cyclin d1 expression in prostate cancer by immunohistochemistry and array comparative genomic hybridization technique.  - 3rd regional conference on molecular medicine.  . 

mohd nizam subahir, shamsul azhar shah, zulkifli md zainuddin.  (2009).  risk factors for prostate cancer in universiti kebangsaan malaysia medical centre: a case-control study..  - asian pacific journal of cancer prevention.  10(6):1015-1019. 

christopher ho chee kong, m fadzli ibrahim, zulkifli md zainuddin.  (2009).  a prospective, randomized clinical trial comparing bipolar plasma kinetic resection of prostate versus conventional monopolar transurethral resection of prostate in the treatment of benign prostatic.  - annals of saudi medicine.  29(6):429-432. 

abdus salam, zulkifly zainuddin, azian abd latif, ima nirwana soelaiman, nabishah mohamad, norhayati moktar.  (2009).  commentary on "assessment of medical graduates competencies".  - mededworld.  . 

nenny ns, siti-aishah ma, reena mz, zulkifli mz, dan zubaidah z..  (2009).  preliminary study of gains and losses in prostate cancer cases by array comparative genomic hybridization.  - 8th malaysia genetics congress.  . 

nenny ns, siti-aishah ma, reena mz, zulkifli mz & zubaidah z..  (2009).  cyclin d1 and p27 overexpressions in prostatic adenocarcinoma.  - 23rd mspp scientific meeting.  . 

abdus salam, ahmad faizal mohd perdaus, siti hamida md isa, zulkifli zainuddin, azian abdul latif, ng soon pheng, zauyah yusuf, ima nirwana soelaiman, nabishah mohamad, norhayati moktar.  (2009).  commentary on "ukm medical graduates? perception of their communication skills during houseman ship".  - mededworld.  . 

hairulfaizi, m rohaizak, i naqiyah, m l yahya, gc tan, z zainuddin.  (2009).  breast and axillary lymph nodes metastasis five years after radical nephrectomy for renal cell carcinoma: a case report and review of the literature.  - libyan journal of medical.  4(3):120-122. 

abdus salam, harlina halizah siraj, zulkifli zainuddin, azian abdul latiff, ng soon pheng, ima nirwana soelaiman, nabishah mohamad, norhayati moktar.  (2008).  competency-based education: confidence of house officers` competency.  - international medical education conference 2008.  . 

c c k ho, m z zulkifli, j nazri, m sundram.  (2008).  hand-assisted laparoscopic nephrectomy and nephroureterectomy: our experience in hospital universiti kebangsaan malaysia.  - medical journal of malaysia.  63(1):41-43. 

abdus salam, zulkifli zainuddin, azian abdul latiff, soon pheng ng, ima nirwana soelaiman, nabishah mohamad, norhayati moktar.  (2008).  assessment of medical graduates competencies.  - annals academy of medicine singapore.  37(9):814-816. 

abdus salam, ahmad faizal mohd perdaus, siti harnida md isa, zulkifli zainuddin, azian abdul latiff, ng soon pheng, zauyah yusuf, ima nirwana soelaiman, nabishah mohamad, norhayati moktar.  (2008).  ukm medical graduates` perception of their communication skills during housemanship.  - medicine & health.  3(1):54-58. 

dr zulkifli md zainuddin.  (2008).  stay healthy, your choice: a health guide for men.  - .  7. 

rosmah dain, zulkifli md zainuddin.  (2007).  lelaki cedera saraf tunjang masih mampu berzuriat.  - utusan malaysia.  . 

e n neo, z zulkifli, s sritharan, b c lee, j nazri.  (2007).  renal autotransplantation after an iatrogenic left ureteric injury.  - medical journal of malaysia.  62(2):164-165. 

eh goh, b badrulhisham, z zulkifli, j nazri, z rozman and noranizah.  (2006).  intrarenal dermoid cyst: a rare presentation.  - 15th malaysian urological conference.  . 

b bahadzor, i fadzli, j nazri, z zulkifli, m taufik.  (2006).  prospective randomised control trials comparing the use of plasmakinetic resection of prostate versus conventional transurethral resection of prostate in the treatment of benign prostatic hyperplasia.  - 8th asian congress of urology.  . 

mar islah, jm nazri, z zulkifli, i azim.  (2006).  a rare presentation of pulmonary tumor embolism in a patient with renal cell carcinoma.  - 15th malaysian urological conference.  . 

mar islah, z zulkifli, jm nazri, b badrulhisham.  (2006).  retrograde intrarenal surgery (rirs): an alternative to standard percutoneous approach.  - 15th malaysian urological conference.  . 

zulkifli md zainuddin.  (2006).  sexuality and the malaysian male.  - 15th malaysian urological conference.  . 

c c k ho, j nazri, m z zulkifli, s sritharan.  (2006).  metastatic penile cancer presenting as hypercalcemia and pathological fracture of the humerus: a rare event.  - medical journal of malaysia.  61(4):503-5. 

cck ho, mz zulkifli, j nazri, s sritharan, ar hayati.  (2006).  metastatic penile cancer presenting as hypercalcaemia and pathological fracture of the humerus: a rare event.  - 15th malaysian urological conference.  . 

ky chan, mz zulkifli, mj nazri, mo rashid.  (2005).  a review of day care ureteroscopy of a teaching hospital in malaysia.  - medical journal of malaysia.  60(1):5-9. 

eh goh, b badrulhisham, z zulkifli, s sritharan, j nazri.  (2005).  iatrogenic urinary tract injury in hukm.  - 14th malaysian urological conference.  .