1. Department of Medicine and Surgery, University of Ilorin, Ilorin, Nigeria
2. Department of Medicine and Surgery, Obafemi Awolowo University Teaching Hospital, Ife, Nigeria
3. Department of Medicine, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
4. Department of Health Sciences, Western Illinois University, Macomb, IL
5. Department of Medicine and Surgery, University of Ibadan, Ibadan, Nigeria.