1. Institute for Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
2. Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.
3. Central Clinical School, Monash University, Melbourne, Australia.
4. University of South Carolina, Columbia, South Carolina, USA.
5. College for Public Health and Social Justice, Saint Louis University, St. Louis, Missouri, USA.
6. The Nigerian Institute of Medical Research, Lagos, Nigeria.
7. National Agency for the Control of AIDS, Abuja, Nigeria.
8. Maternal and Pediatric Infectious Disease Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA.