[1] Pierre Louis Inst Epidemiol & Publ Hlth, UMR S 1136, INSERM, F-75013 Paris, France
[2] Univ Paris 06, Univ Sorbonne, Pierre Louis Inst Epidemiol & Publ Hlth, UMR S 1136, F-75013 Paris, France
[3] Inpes, F-93203 St Denis, France
[4] INSERM, U1018, Equipe Genre Sante Sexuelle & Reprod, CESP, F-94275 Le Kremlin Bicetre, France
[5] Univ Paris 11, Orsay, France
[6] INED, F-75012 Paris, France