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. 

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. 

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. 

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. 

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.  . 

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. 

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. 

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. 

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. 

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. 

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. 

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):. 

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. 

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. 

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. 

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 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. 

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. 

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. 

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. 

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. 

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. 

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. 

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. 

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. 

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 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. 

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. 

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. 

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. 

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 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. 

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. 

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. 

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. 

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. 

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. 

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. 

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. 

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. 

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. 

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. 

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.