[1] Grp Hosp Univ Caremeau, CHU Nimes, Bacteriol Lab, F-30029 Nimes 09, France
[2] Univ Montpellier I, INSERM, UFR Med, U1047, F-30908 Nimes 2, France
[3] Univ Geneva, Univ Hosp Geneva, Div Clin Epidemiol, Geneva, Switzerland
[4] Grp Hosp Univ Caremeau, Serv Gynecol Obstet, F-30029 Nimes 9, France
[5] Grp Hosp Univ Caremeau, Serv Malad Infect & Trop, F-30029 Nimes 9, France