1. Department of Community Medicine, Faculty of Clinical Sciences, College of Health Sciences, Ladoke Akintola University of Technology (LAUTECH), P.M.B. 4400, Osogbo, Osun State, Nigeria
2. Department of Community Medicine, Ladoke Akintola University of Technology (LAUTECH) Teaching Hospital, P.M.B. 4008, Ogbomoso, Oyo State, Nigeria
3. Department of Epidemiology and Community Health, University of Ilorin, Ilorin, Nigeria