[1] Univ Paris 05, Dept Obstet Gynecol & Reprod Med, CHU Cochin, AP HP, F-75014 Paris, France
[2] Cherest Ctr Reprod Med, Paris, France
[3] Univ Hosp Geneva, Dept Obstet & Gynaecol, Geneva, Switzerland
[4] Univ Geneva, Fac Med, Geneva, Switzerland
[5] Univ Paris 05, Dept Reprod Biol, CHU Cochin, AP HP, F-75014 Paris, France
[6] Cochin Inst, Paris, France