1. Department of Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
2. Department of Health Behavior and Health Education, UNC School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
3. UNC Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
4. UNC Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
5. UNC CHAI Core, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
6. UNC School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
7. UNC Center for Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
8. University of Connecticut, Storrs, Connecticut.