M Zilliox1, A Koch2, R Favre1, N Sananes3. 1. Maternal Fetal Medicine Department, Strasbourg University Hospital, Strasbourg, France; Centre Médico-Chirugical et Obstétrical, 19A rue Louis Pasteur, 67300 Schiltigheim, France. 2. Maternal Fetal Medicine Department, Strasbourg University Hospital, Strasbourg, France; Hôpital de Hautepierre, 1 Avenue Molière, 67000 Strasbourg, France. 3. Maternal Fetal Medicine Department, Strasbourg University Hospital, Strasbourg, France; Hôpital de Hautepierre, 1 Avenue Molière, 67000 Strasbourg, France; Centre Médico-Chirugical et Obstétrical, 19A rue Louis Pasteur, 67300 Schiltigheim, France; INSERM UMR-S 1121 "Biomaterials and Bioengineering", 11 rue Humann, 67000 Strasbourg, France. Electronic address: Nicolas.SANANES@chru-strasbourg.fr.