1. Center for Fetal Medicine, Pregnancy and Ultrasound, Department of Obstetrics Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
2. Faculty of Health and Medical Sciences, Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
3. Harris Birthright Research Centre for Fetal Medicine King's College Hospital London UK
4. Department of Clinical Genetics Aarhus University Hospital Aarhus Denmark
5. Center for Fetal Diagnostics, Department of Clinical Medicine Aarhus University Aarhus Denmark
6. Department of Clinical Medicine Aarhus University Aarhus Denmark
7. Department of Obstetrics and Gynecology Aarhus University Hospital Aarhus Denmark
8. Department of Biomedicine Aarhus University Aarhus Denmark
9. Institute of Health Research University of Exeter Exeter UK