1. Department of Public Health, Aarhus University, Aarhus C, Denmark
2. DEFACTUM, Social & Health Services and Labour Market, Central Denmark Region, Aarhus C, Denmark
3. Occupational Medicine, Regional Hospital West Jutland, University Research Clinic, Aarhus University, Herning, Denmark
4. Regional Hospital West Jutland, Herning, Denmark
5. Research Unit for Gynaecology and Obstetrics, Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
6. Centre of Women’s, Family and Child Health, University of South-Eastern Norway, Kongsberg, Norway
7. Department of Clinical Medicine, Aarhus University and Department of Gynaecology Obstetrics, Aarhus University Hospital, Aarhus, Denmark