1. University of Zimbabwe Clinical Trials Research Centre (UZ-CTRC) , Harare , Zimbabwe
2. Fred Hutchinson Cancer Research Center , Seattle, Washington , USA
3. University of Washington, Department of Biostatistics ; Seattle, Washington , USA
4. Magee-Womens Research Institute , Pittsburgh, Pennsylvania , USA
5. Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania , USA
6. University of Alabama at Birmingham, Department of Medicine, Division of Infectious Diseases , Birmingham, Alabama , USA
7. University of Washington, Department of Epidemiology; School of Public Health , Seattle, Washington , USA
8. Wits Reproductive Health and HIV Institute, University of the Witwatersrand, School of Public Health , South Africa
9. Makerere University-Johns Hopkins University Research Collaboration , Kampala , Uganda
10. University of Washington, Department of Global Health ; Seattle, Washington , USA
11. University of Washington, Department of Medicine ; Seattle, Washington , USA