1. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
2. Center for Public Health and Human Rights, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
3. Division of HIV Prevention, Thailand Ministry of Public Health-U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand
4. Department of Population, Family & Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
5. Service Workers in Group Foundation (SWING), Bangkok and Pattaya, Thailand
6. Rainbow Sky Association of Thailand (RSAT), Bangkok, Thailand
7. Department of Disease Control, Thailand Ministry of Public Health, Nonthaburi, Thailand
8. Division of HIV Prevention, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
9. Department of Health, Behavior & Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA