1. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
2. School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
3. Statistical Center for HIV/AIDS Research and Prevention, Fred Hutchison Cancer Research Center, Seattle, Washington, USA
4. Science Facilitation, FHI 360, Durham, North Carolina, USA
5. Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
6. International Partnership for Microbicides, Silver Spring, Maryland, USA
7. Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
8. Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
9. Magee-Womens Research Institute, Pittsburgh, Pennsylvania, USA
10. Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
11. Division of AIDS, NIH, Rockville, Maryland, USA