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