1 Maternal-Fetal and Obstetrics Research Unit, Department of Women, Mother and Child, Lausanne University Hospital, 1011 Lausanne, Switzerland; Department of Gynecology and Obstetrics, Réseau Hospitalier Neuchâtelois, Neuchâtel, Switzerland. Electronic address: manon.vouga@chuv.ch.
2 Maternal-Fetal and Obstetrics Research Unit, Department of Women, Mother and Child, Lausanne University Hospital, Lausanne, Switzerland.