1. Department of Obstetrics and Gynecology; University Hospitals KU Leuven; Leuven; Belgium
2. Department of Obstetrics and Gynecology, Skåne University Hospital Malmö; Lund University; Malmö; Sweden
3. Department of Obstetrics and Gynecology, Queen Charlotte's & Chelsea Hospital; Imperial College; London; UK
4. Department of Obstetrics and Gynecology; Università Cattolica del Sacro Cuore; Rome; Italy
5. Preventive Gynecology Unit, Division of Gynecology; European Institute of Oncology; Milan; Italy