1. Research Unit of Gynecology and Obstetrics Odense University Hospital Odense Denmark
2. Research unit for ORL – Head & Neck Surgery and Audiology Odense University Hospital Odense Denmark
3. Department of Clinical Research Faculty of Health Sciences University of Southern Denmark Odense Denmark
4. Danish Center for Health Economics (DaCHE) Department of Public Health University of Southern Denmark Odense Denmark
5. Institute for Clinical Medicine Faculty of Health Aarhus University Aarhus Denmark
6. Department of Gynecology and Obstetrics Aarhus University Hospital Aarhus Denmark
7. Open Patient data Explorative Network (OPEN) Department of Clinical Research University of Southern Denmark Odense Denmark