1. Center of Fetal Medicine, Department of Obstetrics; Copenhagen University Hospital; Rigshospitalet Copenhagen Denmark
2. Faculty of Health Sciences; University of Copenhagen; Copenhagen Denmark
3. Department of Obstetrics and Gynecology; Aarhus University Hospital; Aarhus Denmark
4. Department of Clinical Medicine; Aarhus University; Aarhus Denmark
5. Department of Clinical Genetics; Copenhagen University Hospital; Rigshospitalet Copenhagen Denmark