1. Department of Health and Mental Health Services, Los Angeles LGBT Center, Los Angeles, California.
2. Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California.
3. Department of Social Welfare, Luskin School of Public Affairs, University of California, Los Angeles, Los Angeles, California.
4. Center for Clinical AIDS Research and Education (CARE), University of California, Los Angeles, Los Angeles, California.