1 Hospices Civils de Lyon, Department of Obstetrics and Gynecology, Femme Mère Enfant Hospital, University Hospital Center, 59 boulevard Pinel, 69500, Lyon-Bron, France; Department of Obstetrics and Gynecology, General Hospital, Thiers, France. Electronic address: enohuz@yahoo.fr.
2 Department of Obstetrics and Gynecology, General Hospital, Thiers, France.
3 Department of Obstetrics and Gynecology, University Hospital, Clermont-Ferrand, France.
4 Department of Obstetrics and Gynecology, University Hospital, Clermont-Ferrand, France; University Clermont-Auvergne, CHU Clermont-Ferrand, CNRS, SIGMA Clermont, Institut Pascal, F-63000 Clermont-Ferrand, France.