1 Department of Obstetrics and Gynecology, Angers University Hospital, Angers, France (Sentilhes) Department of Obstetrics and Gynecology, Centre Hospitalier Intercommunal de Créteil, University of Paris XII, Henri Mondor, Créteil, France (Kayem) Department of Obstetrics and Gynecology, Angers University Hospital, Angers, France (Descamps).