1. Faculty of Health and Medicine, The Fertility Department, Section 4071, The Juliane Marie Centre for Women, Children and Reproduction, University Hospital of Copenhagen, University of Copenhagen, Rigshospitalet , Copenhagen N, Denmark
2. Fertility Clinic, Copenhagen University Hospital-Herlev and Gentofte Hospital , Herlev, Denmark
3. Fertility Clinic, Copenhagen University Hospital Hvidovre , Hvidovre, Denmark
4. Institute of Clinical Medicine, University of Copenhagen , Copenhagen, Denmark
5. Fertility Clinic, Copenhagen University Hospital-North Zealand , Hillerød, Denmark
6. Fertility Clinic, Zealand University Hospital , Køge, Denmark
7. Fertility Unit and Centre for Preimplantation Genetic Test, Aalborg University Hospital , Aalborg, Denmark
8. Fertility Clinic, Horsens Regional Hospital and Institute of Clinical Medicine, Aarhus University , Horsens, Denmark
9. Fertility Clinic, Skive Regional Hospital , Skive, Denmark
10. Department of Public Health, University of Copenhagen , Copenhagen, Denmark