[1] Boston Univ, Sch Publ Hlth, Dept Biostat, Boston, MA 02215 USA
[2] Boston Univ, Sch Publ Hlth, Dept Epidemiol, Boston, MA USA
[3] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Div Gen Med, Boston, MA USA
[4] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Div Infect Dis, Boston, MA USA
[5] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Harvard Ctr AIDS Res, Boston, MA USA
[6] Inst Catholique Lille, CNRS, UMR 8179, Lille, France
[7] Fac Med Lille, EA 2694, F-59045 Lille, France
[8] Ctr Hosp Tourcoing, Serv Malad Infect & Voyageur, Tourcoing, France
[9] Programme PACCI, Abidjan, Cote Ivoire
[10] Univ Bordeaux 2, INSERM, Unite593, F-33076 Bordeaux, France