1. Los Angeles LGBT Center, Los Angeles, California.
2. Department of Community Health Sciences, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California.
3. County of Los Angeles Department of Public Health, Division of HIV and STD Programs (LAC DHSP), Los Angeles, California.
4. Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California.
5. Center for Clinical AIDS Research & Education (CARE), Los Angeles, California.