Prevalence, Risk Behaviors, and Virological Characteristics of Hepatitis B Virus Infection in a Group of Men Who Have Sex with Men in Brazil: Results from a Respondent-Driven Sampl... by Marina P Oliveira, Márcia A D Matos, Ágabo M C Silva, Carmen L R Lopes, Sheila A Teles, Marcos A Matos, Natália Spitz, Natalia M Araujo, Rosa M S Mota, Ligia R F S Kerr, Regina M B Martins

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