1. Garcia M, Jemal A, Ward EM, Center MM, Hao Y, Siegel RL, Thun MJ: Global Cancer Facts & Figures 2007. 2007, Atlanta, GA: American Cancer Society
2. Wolf AMD, Wender RC, Etzioni RB, Thompson IM, D’Amico AV, Volk RJ, Brooks DD, et al: American Cancer Society Guideline for the Early Detection of Prostate Cancer Update 2010. CA Cancer J Clin. 2010, 60: 70-98. 10.3322/caac.20066.
3. WHO: Globocan West Africa. 2008
4. Ogunbiyi JO, Shittu OB: Increased incidence of prostate cancer in Nigerians. J Natl Med Assoc. 1999, 91 (3): 159-64.
5. Akang EE, Aligbe JU, Olisa EG: Prostatic tumours in Benin City, Nigeria. West Afr J Med. 1996, 15: 56-60.