Brazilian Ministry of Health, through the Secretariat for Health Surveillance and the Department of Prevention, Surveillance and Control of Sexually Transmitted Infections, HIV/AIDS and Viral Hepatitis; Universidade Federal do Cear?. Faculdade de Medicina. Departamento de Sa?de Comunit?ria. Fortaleza, CE, Brasil.; Tulane University. Department of Global Community Health and Behavioral Sciences. New Orleans, LA,...