1. Department of Internal Medicine, Section of Infectious Diseases, AIDS Program; Yale School of Medicine; New Haven CT USA
2. Department of Chronic Disease Epidemiology; Yale School of Public Health; New Haven CT USA
3. Asociación Civil Impacta Salud y Educación; Lima Peru
4. National Strategy of Prevention and Control of STIs/AIDS and Viral Hepatitis; Ministry of Health of Peru; Lima Peru
5. General Directorate of Epidemiology; Ministry of Health of Peru; Lima Peru
6. Department of Epidemiology of Microbial Diseases; Yale School of Public Health; New Haven CT USA