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