1. Department of Medicine, Federal Medical Centre, Lokoja, Nigeria
2. Department of Medicine, University of Ilorin Teaching Hospital, Ilorin, Nigeria
3. Department of Microbiology, University of Ilorin Teaching Hospital, Ilorin, Nigeria
4. Department of Microbiology, University College Hospital, Ibadan, Nigeria
5. Department of Ophthalmology, General Hospital, Ilorin, Nigeria