1 Department of Gynecology and Obstetrics, Paule de Viguier Hospital, CHU Toulouse, INSERM UMR 1048, I2MC, Université de Toulouse, Toulouse, France.
2 Department of Obstetrics, CHU Lille, University of Lille, ULR 2694-METRICS, Lille, France.
3 Department of Obstetrics and Gynecology, Poissy-Saint-Germain Hospital, Poissy, France.
4 Department of Gynecology & Obstetrics, Angers University Hospital (CHU d'Angers), Angers, France.
5 Department of Obstetrics, Port-Royal Maternity Unit, Paris, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, Paris, France.
6 Département de Pharmacologie, Hôpital Pitié-Salpêtrière, Paris, France; and Centre Universitaire de Médecine Générale et Santé Publique, UNISANTE, Université de Lausanne, Switzerland.