1. Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia.
2. Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention and ICF, Atlanta, Georgia.
3. Department of Medicine, University of California School of Medicine, San Diego, California.
4. Department of Community Health Sciences, School of Public Health, State University of New York, Downstate Medical Center, Brooklyn, New York.
5. Division of AIDS Research, National Institute of Mental Health, Bethesda, Maryland.
6. Division of Infectious Diseases, Miller School of Medicine, University of Miami, Miami, Florida.
7. Department of Medicine, Boston University School of Medicine, Boston, Massachusetts.
8. Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
9. Department of Medicine, Baylor College of Medicine, Center for Innovations in Quality, Effectiveness, and Safety, Michael E. DeBakey VA Medical Center, Thomas Street Health Center and Harris Health System, Houston, Texas.