1. Department of Medicine, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
2. Department of Medicine and Surgery, University of Ilorin, Kwara State, Nigeria
3. Saint Francis Catholic Hospital, Okpara Inland, Warri Catholic Diocesan Hospital Commission, Delta State, Nigeria
4. Department of Anatomy, College of Health Sciences, Nile University of Nigeria, Abuja, Nigeria
5. Department of Internal Medicine, Asokoro District Hospital, Abuja, Nigeria.