1. Department of Obstetrics and Gynecology, Skåne University Hospital Malmö; Lund University; Malmo, Sweden
2. Preventive Gynecology Unit, Division of Gynecology; European Institute of Oncology; Milan; Italy
3. Department of Obstetrics and Gynecology, Ospedale San Giovanni di Dio; University of Cagliari; Cagliari; Sardinia; Italy
4. Department of Obstetrics and Gynecology; University College Hospital; London; UK
5. Gynecology and Early Pregnancy Ultrasound Unit, S. Orsola-Malpighi Hospital; University of Bologna; Bologna; Italy
6. Gynecological Oncology Center, Department of Obstetrics and Gynecology; First Faculty of Medicine and General Faculty Hospital of Charles University; Prague; Czech Republic
7. Clinica Ostetrica e Ginecologica, Ospedale S. Gerardo; Università di Milano Bicocca; Monza; Italy
8. Istituto di Clinica Ostetrica e Ginecologica; Università Cattolica del Sacro Cuore; Rome; Italy
9. Department of Development and Regeneration; University Hospitals KU Leuven; Leuven; Belgium