1. Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
2. ICF International, Atlanta, Georgia, USA
3. John Snow Inc., Boston, Massachusetts, USA
4. Departments of Epidemiology and Behavioral and Social Health Sciences, Brown University, School of Public Health, Providence, Rhode Island, USA
5. Institute for Community Health Promotion, Brown University, Providence, Rhode Island, USA