1. Department of Obstetrics and Fetal Medicine; Université Paris 5 Descartes, Sorbonne Paris-Cité, Assistance Publique Hôpitaux de Paris, Hôpital Necker-Enfants Malades; Paris France
2. Department of Obstetrics and Gynecology; University of Medicine and Pharmacy Gr.T.Popa; Iasi Romania
3. Department of Radiology; Université Paris 5 Descartes, Sorbonne Paris-Cité, Assistance Publique Hôpitaux de Paris, Hôpital Cochin-Port Royal; Paris France
4. Department of Maxillo-Facial Surgery; Université Paris 5 Descartes, Sorbonne Paris-Cité, Assistance Publique Hôpitaux de Paris, Hôpital Necker-Enfants Malades; Paris France