1. Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
2. Orion Biotechnology, Ottawa, Ontario, Canada.
3. University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
4. Department of Medicine, The Johns Hopkins University, Baltimore, Maryland, USA.
5. FHI 360, Durham, North Carolina, USA.
6. National Institute of Allergy and Infectious Disease, Bethesda, Maryland, USA.
7. Division of HIV/AIDS Prevention, United States Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
8. Thailand Ministry of Public Health, United States Centers for Disease Control and Prevention Collaboration, Bangkok, Thailand.
9. Office of AIDS Research, NIH, Bethesda, Maryland, USA.
10. CONRAD/Eastern Virginia Medical School, Arlington, Virginia, USA.
11. Gilead Sciences, Foster City, California, USA.
12. Department of Medicine, University of Barcelona, Barcelona, Spain.