1. DEFACTUM —Public Health and Health Services ResearchCentral Denmark Region Aarhus Denmark
2. Center for Fetal Diagnostics, Department of Obstetrics and Gynaecology Aarhus University Hospital Aarhus Denmark
3. Department of Obstetrics and Gynaecology Aarhus University Hospital Aarhus Denmark
4. Department of Clinical Medicine Aarhus University Aarhus Denmark
5. Department of Obstetrics and Gynaecology Randers Regional Hospital Randers Denmark