1. Department of Clinical Research, University of Southern Denmark, Odense, Denmark;
2. Department of Gynaecology and Obstetrics, Odense University Hospital, Odense, Denmark;
3. Department of Obstetrics and Gynaecology, Aarhus University Hospital, Aarhus, Denmark;
4. Department of Clinical Research, Aarhus University, Aarhus, Denmark;
5. The Fertility Clinic, Skive Regional Hospital, Skive, Denmark;
6. Faculty of Health, Aarhus University, Aarhus, Denmark;
7. Department of Obstetrics and Gynaecology, Aalborg University Hospital, Aalborg, Denmark;
8. Faculty of Health, Aalborg University, Aalborg, Denmark