1. Nigerian Institute of Medical Research (NIMR), Lagos, Nigeria.
2. CDC, Global AIDS Program in Beijing, Beijing, China.
3. Division of Global HIV/AIDS, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia.
4. CDC, Global AIDS Program in Abuja, Abuja, Nigeria.
5. United States Agency for International Development (USAID), Abuja, Nigeria.
6. HIV and AIDS Division, Federal Ministry of Health, Abuja, Nigeria.