1. Johns Hopkins University, Baltimore, Maryland, USA
2. HPTN Leadership and Operations Center, FHI 360, Durham, North Carolina, USA
3. Statistical Center for HIV/AIDS Research and Prevention, Seattle, Washington , USA
4. University of Washington, Seattle, Washington, USA
5. The Fenway Institute and Harvard Medical School, Boston, Massachusetts, USA
6. Emory University School of Medicine, Atlanta, Georgia, USA
7. The University of Alabama at Birmingham, Birmingham, Alabama, USA
8. HIV Center for Clinical and Behavioral Studies, NY State Psychiatric Institute and Columbia University, New York, New York, USA