Affiliation: | 1. Department of Obstetrics and Gynecology, Landspitali - The National University Hospital of Iceland, Reykjavik, Iceland;2. Faculty of Medicine, University of Iceland, Reykjavik, Iceland;3. deCODE genetics, Reykjavik, Iceland;4. National Center for Fetal Medicine, Department of Obstetrics and Gynecology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway;5. Department of Obstetrics and Gynecology, Stavanger University Hospital, Stravanger, Norway;6. Institute of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway |