| Institution: | 1. Institute of Medical Genetics, University of Zurich, Zurich, Switzerland;2. Division of Obstetrics, University Hospital Zurich, Zurich, Switzerland;3. Swiss Perinatal Institute, Zurich, Switzerland;4. Department of Gynecology and Obstetrics, Kantonsspital Frauenfeld, Spital Thurgau AG, Frauenfeld, Switzerland;5. Division of Gynecology and Obstetrics, Hospital of Männedorf, Männedorf, Switzerland;6. Obstetric Clinic, Winterthur, Switzerland;7. Department of Gynecology and Obstetrics, Kantonsspital Winterthur, Winterthur, Switzerland |
