1. Center of Fetal Medicine and Pregnancy; Copenhagen University Hospital Rigshospitalet; Denmark
2. Department of Cardiology; Copenhagen University Hospital Rigshospitalet; Denmark
3. Department of Pathology; Copenhagen University Hospital Rigshospitalet; Denmark
4. Department of Pediatrics; Copenhagen University Hospital Rigshospitalet; Denmark
5. Department of Obstetrics and Gynecology; Naestved Hospital; Denmark
6. Fetal Medicine Unit, Department of Obstetrics and Gynecology; Copenhagen University Hospital Hvidovre Hospital; Denmark
7. Faculty of Health Sciences; University of Copenhagen; Denmark
8. Department of Obstetrics and Gynecology; Holbaek Hospital; Denmark
9. Department of Obstetrics and Gynecology; Copenhagen University Hospital North Zealand Hospital; Denmark
10. Department of Obstetrics and Gynecology; Roskilde Hospital; Denmark
11. Department of Obstetrics and Gynecology; Glostrup/Herlev Hospital; Denmark