1. Center of Fetal Medicine and Pregnancy; Department of Obstetrics; Rigshospitalet University Hospital; Copenhagen Denmark
2. Department of Obstetrics and Gynecology; Medical University of Vienna; Vienna Austria
3. Department of Obstetrics and Gynecology; Aalborg Hospital; Aalborg Denmark
4. Department of Obstetrics and Gynecology; Viborg Hospital; Viborg Denmark
5. Department of Obstetrics and Gynecology; Hvidovre Hospital; Hvidovre Denmark
6. Department of Obstetrics and Gynecology; Aarhus University Hospital; Skejby Denmark
7. Department of Obstetrics and Gynecology; Sønderborg Hospital; Sønderborg Denmark
8. Department of Obstetrics and Gynecology; Nordsjaellands Hospital; Hillerød Denmark
9. Department of Obstetrics and Gynecology; University Hospital Roskilde; Roskilde Denmark
10. Faculty of Health Sciences; University of Copenhagen; Copenhagen Denmark
11. Department of Obstetrics and Gynecology; Herlev Hospital; Herlev Denmark
12. Department of Obstetrics and Gynecology; Klagenfurt General Hospital; Klagenfurt Austria
13. Department of Obstetrics and Gynecology; Holbaek Hospital; Holbaek Denmark
14. Department of Obstetrics and Gynecology; Glostrup Hospital; Glostrup Denmark
15. Department of Obstetrics and Gynecology; Medical University of Graz; Graz Denmark
16. Department of Obstetrics and Gynecology; Medical University of Innsbruck; Innsbruck Austria
17. Department of Obstetrics and Gynecology; Odense University Hospital; Odense Denmark
18. Department of Obstetrics and Gynecology; Gentofte Hospital; Gentofte Denmark
19. Department of Obstetrics and Gynecology; Silkeborg Hospital; Silkeborg Denmark
20. Department of Obstetrics and Gynecology; Randers Hospital; Randers Denmark