1. Faculty of Clinical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State
2. Department of Medicine and Surgery, Ladoke Akintola University of Technology, Ogbomoso
3. Faculty of Clinical Sciences, College of Medicine University of Lagos, Lagos
4. Faculty of Clinical Sciences, University of Abuja Teaching Hospital, Abuja
5. School of Basic Medical Sciences, Federal University of Technology, Akure, Nigeria