1. Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
2. Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
3. Science Facilitation Department, Family Health International 360, Durham, North Carolina, USA
4. Kenya Medical Research Institute Centers for Disease Control and Prevention, Kisumu, Kenya
5. Department of Internal Medicine, Johns Hopkins Project, College of Medicine, Malawi, Blantyre, Malawi
6. Perinatal Human Immunodeficiency Virus Research Unit, University of the Witwatersrand, Soweto Human Immunodeficiency Virus Prevention Trials Network Clinical Research Site, Soweto, South Africa
7. Desmond Tutu Human Immunodeficiency Virus Centre, University of Cape Town Medical School, Cape Town, South Africa
8. Human Immunodeficiency Virus Center for Clinical and Behaviora l Studies, Columbia University, New York, New York, USA