1. Department of Family Medicine, University of Ilorin Teaching Hospital, Ilorin, Kwara State, Nigeria
2. Oorelope Hospital, KM 8, Apata Yakuba, Ilorin, Kwara State, Nigeria
3. Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
4. Department of Chemical Pathology and Immunology, University of Ilorin, Ilorin, Kwara State, Nigeria
5. Department of Epidemiology and Community Health, University of Ilorin Teaching Hospital, Ilorin, Kwara State, Nigeria
6. Department of Family Medicine, Ahmadu Bello University, Teaching Hospital, Zaria, Nigeria
7. Department of Medicine, Federal Teaching Hospital, Ido-Ekiti, Nigeria