1. Department of Obstetrics and GynecologyUniversity Hospitals KU Leuven Leuven Belgium
2. Department of Obstetrics and GynecologyAmsterdam Reproduction and Development Research Institute, Amsterdam University Medical Centers, VUMC Amsterdam The Netherlands
3. Department of Obstetrics and GynecologyAarhus University Hospital Aarhus Denmark
4. Department of Biomedicine and PreventionObstetrics and Gynecological Clinic, University of Rome ‘Tor Vergata’ Rome Italy
5. Department of Obstetrics and GynecologySkåne University Hospital Malmö, Lund University Malmö Sweden
6. Queen Charlotte's & Chelsea HospitalImperial College London UK