mohd saufee al firdaus mohd ismail, guo hou loo, guhan muthkumanan, nik ritza kosai.  (2026).  topical emla cream as adjunct analgesia in postoperative pain control for open inguinal hernioplasty under local anesthesia: a pilot double-blind randomized controlled trial.  - world journal of surgery.  369 - 375. 

theeran kaur gill, guo hou loo, guhan muthkumaran, nik ritza kosai.  (2025).  posterior membranous tracheal injury during mckeown oesophagectomy. a case report with literature review..  - frontiers in oncology.  1 - 6. 

firdaus che ani, guo hou loo, richelle huey bing chua, kok-yong chin, nik ritza kosai.  (2025).  integrating cruroplasty with laparoscopic sleeve gastrectomy: a strategy to mitigate gerd symptoms in obese patients. a randomized control trial.  - langenbeck's archives of surgery.  1 - 7. 

wan izzah wan jaffar, guo hou loo, fazarina mohammed, deborah chia hsin chew, guhan muthkumaran and nik ritza kosai.  (2025).  case report: rare case of signet ring gastric adenocarcinoma with rectal metastasis.  - frontiers in oncology.  1 - 6. 

jun sen chuah, jih huei tan, mohamad adam bujang, koon khee chan, nik ritza kosai.  (2024).  transcutaneous electric nerve stimulation of acupuncture points improves tolerance in adults undergoing diagnostic upper gastrointestinal endoscopy - a single center, double-blinded, randomized controlled trial.  - surgical endoscopy.  3279 - 3287. 

asif sukri, alfizah hanafiah, nik ritza kossai, mohamad aznan shuhaili, mustafa mohammed taher, raja affendi raja ali.  (2024).  perbandingan pengekspresan antigen kluster pembezaan dalam subjenis tumor dan darah periferi pesakit kanser gaster .  - sains malaysiana.  3253 - 3262. 

alfizah hanafiah, asif sukri, nik ritza kosai, mohamad aznan shuhaili, mustafa mohammed taher & raja affendi raja ali.  (2023).  immunophenotyping of gastritis, gastric ulcer and gastric cancer using a cluster of differentiation (cd) antibody microarray.  - sains malaysiana.  187-197. 

sivesh kk., sheraz rm., pritam s., ewan ag., on behalf of oeasophagogastric anastomosis audit group.  (2020).  the influence of the sars-cov-2 pandemic on esophagogastric cancer services: an international survey of esophagogastric surgeons.  - diseases of the esophagus.  1-12. 

reynu rajan, mohammed sam-aan, nik ritza kosai, mohamad aznan shuhaili, tee sze chee, ajay venkateswaran, kamal mahawar.  (2020).  early outcome of bariatric surgery for the treatment of type 2 diabetes mellitus in super-obese malaysian population.  - journal of minimal access surgery.  47-53. 

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. 

sujith wijerathne, shashank rastogi, kyungwon seo, junbeom park, mukund thakur, marc ong weijie, tuan le quan anh, duong trong hien, dato' nik ritza kosai nik mahmood, lau peng choong, siripong cheewatanakornkul, pichest watanapairojrat, kreangsak chainapapong.  (2026).  clinical consensus on the role of self-fixating mesh in laparoscopic inguinal hernia repair.  - asian journal of endoscopic surgery.  1 - 12. 

mohd saufee al firdaus mohd ismail, guo hou loo, guhan muthkumanan, nik ritza kosai.  (2026).  topical emla cream as adjunct analgesia in postoperative pain control for open inguinal hernioplasty under local anesthesia: a pilot double-blind randomized controlled trial.  - world journal of surgery.  369 - 375. 

theeran kaur gill, guo hou loo, guhan muthkumaran, nik ritza kosai.  (2025).  posterior membranous tracheal injury during mckeown oesophagectomy. a case report with literature review..  - frontiers in oncology.  1 - 6. 

firdaus che ani, guo hou loo, richelle huey bing chua, kok-yong chin, nik ritza kosai.  (2025).  integrating cruroplasty with laparoscopic sleeve gastrectomy: a strategy to mitigate gerd symptoms in obese patients. a randomized control trial.  - langenbeck's archives of surgery.  1 - 7. 

muhamad zulhilmi akmal zainuddin, jemaima che hamzah, nik ritza kosai nik mahmood, cheng teck chee, mae-lynn catherine bastion.  (2025).  nutritional optic neuropathy: bariatric surgery gone wrong.  - cureus.  1 - 12. 

hanafiah harunarashid, farrah-hani imran,, nik ritza kosai.  (2017).  chapter 17: skin incisions.  - at a glance series (oxford, england).  38-39. 

halina md. noor, nik ritza kosai nik mahmood.  (2025).  rawatan obesiti tanpa pembedahan, parut.  - utusan malaysia.  . 

nik ritza kosai nik mahmood.  (2025).  bariatrik bukan jalan pintas untuk cantik.  - sinar harian.  . 

nik ritza kosai nik mahmood.  (2025).  kaedah belon bantu atasi masalah obesiti.  - berita harian.  . 

nik ritza kosai nik mahmood.  (2025).  belon telan allurion jadi pilihan.  - harian metro.  . 

asif sukri, alfizah hanafiah, nik ritza kossai, mohamad aznan shuhaili, mustafa mohammed taher, raja affendi raja ali.  (2024).  perbandingan pengekspresan antigen kluster pembezaan dalam subjenis tumor dan darah periferi pesakit kanser gaster .  - sains malaysiana.  3253 - 3262. 

soon li wei, nik ritza kosai nik mahmood, norlela sukor.  (2025).  esg: a breakthrough option for weight loss, say hctm experts.  - bfokus.  . 

nik ritza kosai, jeffrey bronks, loo guo hou.  (2025).  scalable solutions for mid-tier obesity: revisiting the role of igbs.  - omnihealth practice.  . 

wan ahmad atarmizi, nik ritza kosai nik mahmood.  (2025).  why bariatric surgery is classified as a treatment for disease, not an easy way out.  - sinar daily.  . 

halina md. noor, nik ritza kosai nik mahmood.  (2025).  rawatan obesiti tanpa pembedahan, parut.  - utusan malaysia.  . 

nik ritza kosai nik mahmood.  (2025).  bariatrik bukan jalan pintas untuk cantik.  - sinar harian.  .