nik ritza kosai nik mahmooh.  (2023).  pembedahan bariatrik rawat obes sahaja.  - metro ahad.  3. 

nik ritza kosai.  (2023).  alternatif turunkan berat badan: kaedah bariatrik, belon intragastrik bantu kawal obesiti.  - berita harian.  25. 

nik ritza kosai nik mahmood.  (2023).  the business station (bfm).  - what do intragastric balloons offer in obesity management?.  . 

david gan, nik ritza kosai.  (2022).  performance and diagnostic accuracy of scoring systems in patients with suspected adult appendicitis.  - assessment of dissertation defense day.  25. 

nik ritza kosai nik mahmood , muhammad maaya , lee qi zheng.  (2022).  the role of lntraperitoneal instillation of local anaesthesia (ropivacaine) for postoperative pain management in laparoscopic sleeve gastrectomy surgery (lsgs):rosle randomised controlled trial.  - assessment of dissertation defense day.  30. 

nabilah hisham, alfizah hanafiah, tan geok chin, nik ritza kosai, muaatamarulain mustangin.  (2022).  detection of expressed pro-inflammatory cytokine interleukin-32 in gastric cancer patients from ukm medical centre (ukmmc) using immunohistochemistry (ihc).  - gut 2022.  1. 

nik ritza kosai nik mahmood.  (2022).  'sentuhan emas' dr nik ritza kosai.  - harian metro.  1-7. 

mohanraj t, nik ritza kosai.  (2022).  predictors associated with morbidity of ureteral stent related symptoms (srs) in patients with in-dwelling ureteric stents in hospital serdang.  - assessment of dissertation defense day.  21. 

asif sukri, alfizah hanafiah, nik ritza kosai, mustafa mohamed taher, isa mohamed rose.  (2021).  cluster of differentiation (cd) antigens as biomarkers for prognosis of different subtypes of gastric cancer: a preliminary study.  - precision health in industrial revolution 4.0 (ir 4.0): the technologies and health transformation.  20. 

alfizah hanafiah, nabilah hisham, tan geok chin, muaatamarulain mustangin, nik ritza kosai nik mahmood.  (2021).  expression of interleukin-32 in gastric cancer patients in ukm medical centre (ukmmc).  - .  1-5. 

nik ritza kosai nik mahmood.  (2021).  what to know about obesity in malaysia.  - tatler malaysia.  1. 

nik ritza kosai nik mahmood, hardip singh gendeh, mardiana mardan.  (2021).  managing diabetes through surgery.  - the health.  14-15. 

nik ritza kosai nik mahmood, hardip singh gendeh, mardiana mardan.  (2020).  the health.  - obesity a serious risk factor in covid-19.  16-17. 

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.  - .  . 

nik ritza kosai nik mahmood.  (2019).  cutting away obesity.  - the health.  14-15. 

alfizah binti hanafiah;nik ritza kosai bin nik mahmood;raja affendi bin raja ali;mustafa mohammed taher;isa b mohamed rose.  (2019).  analysis of cluster of differentiation (cd) antigens in h. pylori-associated gastric cancer and non-gastric cancer.  - .  1-6. 

m. azman, n. sze yin, m mat baki, a. sani, n.r. kosai.  (2018).  surgical versus conventional weight loss therapy for obstructive sleep apnea, a randomized controlled trial: quantitative and qualitative outcome.  - 9th isss international surgical sleep society meeting.  . 

alfizah hanafiah, muhammad hafiz, asif sukri, raja affendi raja ali, nik ritza kosai, mohamad aznan shuhaili, mustafa mohammed taher.  (2018).  immunophenotyping of gastric cancers and non-gastric cancers using cluster of differentiation (cd) antibody microarray.  - 8th regional conference on molecular medicine in conjunction with 4th national conference for cancer research.  . 

nik ritza kosai nik mahmood.  (2017).  bariatric surgery : timing.  - liver update 2017.  . 

nik ritza kosai nik mahmood.  (2017).  pembedahan bariatrik tangani diabetes.  - harian metro.  20. 

nik ritza kosai.  (2017).  3rd international conference on advances in medical science 2017.  - adenocarcinoma of the gastro-oesophageal junction : the rise of a silent killer.  . 

nik ritza kosai bin nik mahmood.  (2017).  surgery for diabetes?.  - the star.  9. 

hl tan, cs ngiu, nr kosai, j naidu, r abdul rani, mh elias, nm mokhtar, na hamid, ra raja ali.  (2016).  the application of serum biomarkers to detect pre-malignant lesions in gastric corpus.  - annual scientific congredd of the malaysian society of gastroenterology and hepatology.  . 

n kosai, y yussra, p a sutton, h f shabbar, r razrim, t mustafa, a tamil, r reynu.  (2015).  the early outcomes of a randomized single blinded prospective study of laparoscopic inguinal hernia repair: tac fixation versus self adhesive mesh.  - 1st world conference on abdominal wall hernia surgery.  . 

nik ritza kosai nik mahmood.  (2015).  surgery and endoscopic therapy as the new treatment option for metabolic syndrome and diabetes: a paradigm shift.  - 2nd international conference on advances in medical science (icams).  . 

a t hizami, r reynu, n r kosai, m t mustafa, g tikfu.  (2015).  laparoscopic sleeve gastrectomy versus laparoscopic banded gastric plication: a combined university hospital experience.  - college of surgeon, academy of medicine of malaysia.  . 

a haniffa, r reynu, n r kosai.  (2015).  comparison between laparoscopic sleeve gastrectomy and laparoscopic roux-en-y gastric bypass in predicting the remission of type 2 diabetes mellitus in morbidly obese population.  - annual scientific meeting college of surgeon,academy of medicine of malaysia.  . 

n r kosai, h s gendeh, m t mustafa, r reynu.  (2015).  an innovative method of managing early buried bumper syndrome.  - annual scientific meeting college of surgeon, academy of medicine of malaysia.  . 

alfizah hanafiah, asif sukri, nik ritza kosai, mustafa mohamed taher, isa mohamed rose.  (2015).  distinct cd antigens expression in helicobacter pylori-infected and -uninfected gastric cancer patients.  - gut 2015: annual scientific congress of malaysian society of gastroenterology & hepatology.  . 

r reynu, n r kosai, m t mustafa, k w chan.  (2015).  breast-esophagus syndrome: esophageal metastasis from invasive ductal carcinoma of breast.  - annual scientific meeting college of surgeon academy of medicine of malaysia.  . 

r reynu, nr kosai.  (2015).  predicting remission of type 2 diabetes mellitus following laparoscopic bariatric surgery in morbidly obese malaysians: a randomised controlled trial.  - 4th national & 1st mediterranean congress on surgery for morbid obesity and metabolic disorders.  . 

elsa r, reynu r, kosai n r, yugasaravanan k.  (2015).  laparoscopic transgasrtic enucleation of a peri-cardial gastrointestinal stomal tumour (gist).  - annual scientific meeting college of surgeons academy of medicine of malaysia.  . 

mm taher, nrk nik mahmood, aa wahidy, r rajan.  (2015).  stump appendicitis : diagnosis dilemma and technical challenge.  - 46th world congress of surgery international society of surgery 40th rsct annual scientific congress.  . 

r rajan, lks christopher, nr kosai, l kesu balani, m mohammed taher, s das, pa sutton.  (2015).  improvement of pulmonary function following a structured exercise regime in obese population: a universuty hospital experience in malaysia.  - 46th world congress of surgery international society of surgery 40th rsct annual scientific congress.  . 

asif sukri, alfizah hanafiah, nik ritza kosai, mustafa mohamed taher, isa mohamed rose.  (2015).  distinct helicobacter pylori caga genotypes induced different immunopheotypic changes of cd antigens in gastric adenocarcinoma cell line.  - minggu penyelidikan perubatan & kesihatan ke-17.  . 

asif sukri, alfizah hanafiah, nik ritza kosai, mustafa mohamed taher, isa mohamed rose.  (2015).  cd antigen expression in helicobacter pylori-infected patients with chronic gastritis and gastric cancer.  - minggu penyelidikan perubatan & kesihatan ke-17.  . 

nr kosai, mm taher, kb levin, ct tang, yc lim.  (2014).  synchronous gastric carcinoma and pancreatic tumors.  - agm & annual scientific meeting.  . 

hs gendeh, nr kosai, sa watson, r kumari.  (2014).  cancer stem cells and chemoresistance in breast, prostate and colon cancer.  - agm & annual scientific meeting.  . 

nr kosai, hs gendeh, mm taher, r reynu.  (2014).  a creative treatment to treating early buried bumper syndrome.  - msgh annual scientific congress & ecco educational workshop.  . 

nr kosai, hs gendeh, mm taher, pa sutton.  (2014).  laparoscopic totally transhiatal diverticulectomy of giant epiphrenic oesophageal diverticulum.  - agm & annual scientific meeting.  . 

nik ritza kosai.  (2014).  bariatric surgery in asia and malaysia.  - agm & annual scientific meeting.  . 

nur afdzillah ar, gendeh h, zulkifli i, nik ritza kosai nm, sagap i.  (2014).  blatchford and rockall scores in predicting ugib severity in single tertiary centre, experience in 50 consecutive urgent ogds: a prospective observational study.  - agm & annual scientific meeting.  . 

sm rusli, mm taher, nr kosai.  (2014).  body mass index and obstructive sleep apnoea.  - agm & annual scientific meeting.  . 

arvind jagwani, nr kosai, mm taher.  (2014).  bariatric surgery on the outcome of hypertension.  - agm & annual scientific meeting.  . 

anitha h, kosai n.  (2014).  surgical treatment of type 2 diabetes mellitus.  - agm & annual scientific meeting.  . 

jh soh, mustafa taher, nik ritza kosai.  (2014).  prevalence of cardiac dysfunction among morbidly obese and metabolic syndrome patients.  - agm & annual scientific meeting.  . 

nm nik kosai, m taher, c p ooi, z suehazlyn, s norlela, s norlaila, aw norasyikin, o ahmad marzuki, s mohammad arif, m azura dina, ws wan juani, k nor azmi.  (2013).  outcome of bariatric surgery following failed conservative weight management: the universiti kebangsaan malaysia medical centre experience.  - the 17th afes congress.  . 

cp ooi, nik kosai nm, m taher, z suehazlyn, s norlela, m norlaila, aw norasyikin, mohammad arif, o ahmad marzuki, ar anilah, m azura dina, ws wan juani, k nor azmi.  (2013).  comparing bariatric surgery versus non-surgical treatments experience in universiti kebangsaan malaysia medical centre.  - the 17th afes congress.  . 

ooi cp, suehazlyn z, nm nik kosai, m taher, aw norasyikin, s norlela, m norlaila, o ahmad marzuki, s mohammad arif, ar anilah, m azura dina, ws wan juani, k nor azmi.  (2013).  the multidisciplinary endocrine obesity clinic : the universiti kebangsaan malaysia medical centre experience with non-surgical weight loss management.  - the 17th asean federation of endocrine societies congress.  . 

rafidah rosli, nik ritza kosai.  (2013).  makanan masin rangsang serangan kanser esofagus.  - isihat.  . 

nik ritza kosai nik mahmood.  (2013).  parietex progriptm self-fixating mesh in laparoscopic hernia repair.  - .  . 

nik ritza kosai nik mahmood.  (2013).  are we ready for bariatric surgery in treating patients with nafld? the debate: proponent.  - 10th liver update 2013 international conference.  . 

y yussra, h f shaba, n kosai.  (2013).  early outcome on randomized single blinded prospective study of laparoscopic inguinal hernia repair : tac fixation versus self adhesive mesh.  - annual general meeting & annual scientific meeting.  . 

nik ritza kosai nik mahmood.  (2013).  tingkatkan peluang untuk hidup.  - kompilasi majalah isihat & mingguan malaysia.  . 

nur hasyimah othman, dr nik ritza kosai nik mahmood.  (2013).  mengapa sakit perut?.  - isihat.  . 

noorharisman, pa sutton, nr kosai.  (2012).  a case of closed loop small bowel obstruction within a strangulated insional hernia and an associated with an acute gastric volvulus.  - annual scientific meeting of the malaysian society of gastroenterology and hepatology.  . 

my rizal, nr kosai, rozman, j razman, h hanafiah, srijit das.  (2012).  arterial embolization of a bleeding gastric dieulafoy lesion: a case report.  - annual scientific meeting of the malaysian sociaety of gastroenterology and hepatology 2012.  . 

fj ruhi, y yazmin, r razrim, z rozman, j razman, mr dzulkhairi, nr kosai.  (2012).  a comparison of transarterial angioembolization versus surgery after failed endoscopic therapy for non variceal upper gastrointestinal bleeding.  - annual scientific meeting of the malaysian society of gastroenterology and hepatology.  . 

noorharisman, pa sutton, nr kosai.  (2012).  managing the challenges of chron`s disease with complex enterocutaneous fistula: an approach to reconstructive surgery.  - annual scientific meeting of the malaysian society of gastroenterology and hepatology.  . 

fj ruhi, nr kosai, j razman.  (2012).  where is the portal vein?.  - msgh e-bulletin.  . 

noor hidayah shafiee, nik ritza kosai.  (2012).  bedah & buang perut: tingkatkan peluang untuk hidup.  - isihat.  . 

y yussra, nr kosai, r razrim, a azlan, j razman.  (2011).  early experience of the lateral approach for laparoscopic splenic preserving distal pancreatectomy.  - annual general meeting & annual scientific meeting.  . 

kosai nr, razrim r, varghese t.  (2011).  laparoscopic trans-abdominal pre-peritoneal (tapp) inguinal hernia repair using a novel self-adhesive mesh..  - college of surgeon annual scientific meeting.  . 

nor faezan ar, azlanudin a, razrim r, nr kosai.  (2011).  prolapse of gastric polyps causing intermittent, recurrent gastric outlet obstruction.  - annual scientific meeting of the malaysian society gastroenterology and hepatology.  .