[1] Ctr INSERM U897 Epidemiol & Biostat, INSERM, Bordeaux, France
[2] Bordeaux Univ, ISPED, F-33076 Bordeaux, France
[3] CNRS UMR 5114, COMPTRASEC, Pessac, France
[4] Ctr Hosp Univ Sylvanus Olympio, Serv Malad Infect, Lome, Togo
[5] Fac Mixte Med & Pharm, Dept Sante Publ, Lome, Togo
[6] Ctr Hosp Univ Sylvanus Olympio, Serv Pediat, Lome, Togo