1. Center of Fetal Medicine; Department of Obstetrics; Copenhagen University Hospital Rigshospitalet; Copenhagen Denmark
2. Fetal Medicine Unit; Department of Obstetrics; Aarhus University Hospital; Skejby Denmark
3. Fetal Medicine Unit; Department of Obstetrics and Gynecology; Copenhagen University Hospital Hvidovre; Copenhagen Denmark
4. Faculty of Medicine and Health Sciences; University of Copenhagen; Copenhagen Denmark
5. Department of Clinical Genetics; Rigshospitalet; Copenhagen Denmark
6. Departments of Gynecology and Obstetrics; Holbaek Hospital; Holbaek Denmark
7. Kolding Hospital; Kolding Denmark
8. Roskilde Hospital; Roskilde Denmark
9. Aalborg Hospital; Aalborg Denmark
10. Horsens Hospital; Horsens Denmark
11. Odense University Hospital; Odense Denmark
12. Hjoerring Hospital; Hjoerring Denmark
13. Fetal Medicine Unit; Department of Gynecology and Obstetrics; Herlev Hospital; Copenhagen Denmark
14. Unit for Clinical Information and Data; Capitol Region; Copenhagen Denmark