[1] Oswaldo Cruz Fdn FIOCRUZ, Comp Sci Program, Natl Sch Publ Hlth, Dept Epidemiol & Quantitat Methods Hlth, Rio De Janeiro, Brazil
[2] Univ Pittsburgh, Sch Med, Grad Sch Publ Hlth, Infect Dis Epidemiol Res Unit, Pittsburgh, PA USA
[3] Univ Fed Rio de Janeiro, Hosp Escola Sao Francisco de Assis, Proj Praca Onze, Rio De Janeiro, Brazil
[4] Univ Fed Rio de Janeiro, Hosp Univ Clementino Fraga Filho, AIDS Res Lab, Rio De Janeiro, Brazil