[1] Univ Victor Segalen, Unite INSERM 330, F-33076 Bordeaux, France
[2] Inst Child Hlth, Dept Epidemiol & Publ Hlth, London, England
[3] UNAIDS Programme, Policy Strategy & Res Unit, Geneva, Switzerland
[4] Ctr Muraz, Bobo Dioulasso, Burkina Faso
[5] Projet RETROCI, Abidjan, Cote Ivoire
[6] CHL Intervent Study, Mombasa, Kenya
[7] Johns Hopkins Univ, Blantyre, Malawi
[8] Blair Res Lab, Harare, Zimbabwe
[9] Univ Natal, ZA-4001 Durban, South Africa
[10] HIV AIDS Collaborat, Bangkok, Thailand