1. Department of Obstetrics and Gynecology; Skåne University Hospital; Lund University; Malmö Sweden
2. Department of Obstetrics and Gynecology; Helsingborg Hospital; Affiliated Lund University; Helsingborg Sweden
3. Department of Research and Development; Skåne University Hospital; Lund Sweden
4. Fertility Clinic 4071; University Hospital Rigshospitalet; Copenhagen Denmark
5. Department of Obstetrics and Gynecology; Aalborg University Hospital; Clinical Institute at Aalborg University; Aalborg Denmark