1. Fetal Medicine Unit, Department of Obstetrics and Gynecology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
2. Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
3. Center of Fetal Medicine and Pregnancy, Department of Obstetrics, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
4. Fetal Medicine Unit, Department of Obstetrics and Gynecology, Copenhagen University Hospital Herlev, Herlev, Denmark