1. Vaccine and Infectious Disease and Public Health Sciences Divisions Fred Hutchinson Cancer Research Center Seattle WA USA
2. Department of Biostatistics University of Washington Seattle WA USA
3. Department of Medicine Johns Hopkins University Baltimore MD USA
4. Women's Global Health Imperative RTI International San Francisco CA USA
5. Makerere University‐Johns Hopkins University Research Collaboration Kampala Uganda
6. University of Zimbabwe College of Health Sciences Clinical Trials Research Centre Harare Zimbabwe
7. Wits Reproductive Health and HIV Research Institute School of Clinical Medicine University of the Witswatersrand Johannesburg South Africa
8. Desmond Tutu HIV Foundation Clinical Research Site Cape Town South Africa
9. Division of AIDS National Institute of Allergy and Infectious DiseasesNational Institutes of Health Bethesda MD USA
10. Department of Obstetrics, Gynecology and Reproductive Sciences University of Pittsburgh School of Medicine and Magee‐Womens Research Institute Pittsburgh PA USA
11. Departments of Medicine, Epidemiology, and Global Health University of Washington Seattle WA USA