Department of Surveillance, Prevention and Control of Sexually Transmitted Infections, HIV/AIDS and Viral Hepatitis, of the Secretariat for Health Surveillance of the Brazilian Ministry of Health; Universidade Federal de S?o Jo?o del-Rei. Divinopolis, MG, Brazil.; Universidade Federal de Minas Gerais. Departamento de Medicina Preventiva e Social. Belo Horizonte, MG, Brazil.; Fundacao Oswaldo Cruz. Instituto Agg...