1. Department of Public Health Programs Randers Regional Hospital Randers Denmark
2. Department of Clinical Medicine Aarhus University Aarhus Denmark
3. Department of Obstetrics and Gynecology Odense University Hospital Odense Denmark
4. Open Patient data Explorative Network (OPEN) Department of Clinical Research University of Southern Denmark Odense Denmark
5. Department of Obstetrics and Gynecology Randers Regional Hospital Randers Denmark
6. Department of Obstetrics and Gynecology Gødstrup Hospital Gødstrup Denmark
7. Department of Obstetrics and Gynecology Aarhus University Hospital Aarhus Denmark