1. Department of Chemical Pathology, College of Medicine, University of Ibadan, Ibadan, Nigeria
2. Department of Obstetrics and Gynaecology, College of Medicine, University of Ibadan, Ibadan, Nigeria
3. Department of Paediatrics, College of Medicine, University of Ibadan, Ibadan, Nigeria
4. Department of Medical Microbiology, College of Medicine, University of Ibadan, Ibadan, Nigeria
5. Department of Epidemiology and Medical Statistics, College of Medicine, University of Ibadan, Ibadan, Nigeria
6. Department of Family Medicine, University College Hospital, Ibadan, Nigeria
7. Department of Virology, College of Medicine, University of Ibadan, Ibadan, Nigeria
8. AIDS Prevention Iniative in Nigeria (APIN), Abuja, Nigeria
9. Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
10. Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA, USA