S. Ahmad, O. Othman.  (2011).  Diabetic retinopathy as a predictor for erectile dysfunction amongst male diabetics.  - Journal of Men`s Health.  8(3):211. 

Mohd Rohaizat H, Saharudin A, Nizam B, Suhaida MS, Morsafinaz M, Eva Nabiha Z, Nazarudin S..  (2011).  Erectile dysfunction amongst men with diabetes mellitus in a primary healthcare setting, Malaysia.  - Medicine & Health.  217. 

Nur Aishah AL, Farahlina B, Nabihah N, Ng KW, Lau LK, Mohd Ramzisham AR, Hairul Faizi H, Syazarina SO, Oteh M, Saharuddin A, Mohd Zamrin D, Ika Faizura MN Ishamuddin I.  (2011).  The prevalence of carotid artery disease in patients with coronary artery disease in local setting - Universiti Kebangsaan Malaysia Medical Centre.  - Medicine and Health.  228. 

S. Ahmad, M.M. Radzi, Y.S. Ting, S.M.S. Ali, C.H. Chin, Z.A. Othman, N.I.M. Tahir , O. Othman, R.A. Rashid, N.A. Aziz.  (2010).  Erectile dysfunction amongst men with diabetes in Malaysia: Perception and reality, a cross-sectional study.  - Journal of Men`s Health.  7(3):297. 

Mohd Radzniwan A Rashid, Aznida Firzah Abdul Aziz, Saharuddin Ahmad, Shamsul Azhar Shah, Ismail Sagap.  (2009).  Colorectal cancer patients in a tertiary referral centre in Malaysia: a five year follow-up review.  - Asian Pacific Journal of Cancer Prevention.  10(6):1163-1166.