1. Obstetric Unit, Woman-Mother-Child Department, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland / Faculty of Medicine, University of Lausanne, Switzerland
2. Obstetric Division, Department of Paediatrics, Gynaecology and Obstetrics, University Hospitals of Geneva (HUG), Geneva, Switzerland / Faculty of Medicine, University of Geneva, Switzerland
3. Obstetric Division, Department of Paediatrics, Gynaecology and Obstetrics, University Hospitals of Geneva (HUG), Geneva, Switzerland