Olayinka Stephen Ilesanmi1, Aanuoluwapo Adeyimika Afolabi2. 1. MBBS, MSc, MPH, FWACP, Ph.D., Department of Community Medicine, College of Medicine, University of Ibadan, Oyo State, Nigeria. Department of Community Medicine, University College Hospital, PMB 5116, Ibadan, Oyo State, Nigeria. 2. B.Tech., Department of Community Medicine, College of Medicine, University of Ibadan, PMB 5116, Oyo State, Nigeria.