1. Unit of Obstetrics and Gynecology, “Paolo Giaccone” Hospital, 90127 Palermo, Italy
2. Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy
3. Department of Obstetrics and Gynecology, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, 20132 Milan, Italy
4. Unit of Gynecologic Oncology, National Cancer Institute IRCCS Fondazione “G. Pascale”, 80131 Naples, Italy
5. Division of Gynecology and Obstetrics, Department of Surgical Sciences, University of Cagliari, 09124 Cagliari, Italy
6. Department of Medical and Surgical Sciences, Institute of Obstetrics and Gynecology, University of Foggia, 71121 Foggia, Italy
7. Department of Interdisciplinary Medicine (DIM), Unit of Obstetrics and Gynecology, University of Bari “Aldo Moro”, Policlinico of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
8. Department of Woman, Child and General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
9. Unit of Obstetrics and Gynecology, Department of General Surgery and Medical-Surgical Specialism, University of Catania, P.O. “G. Rodolico”, Via Santa Sofia, 78, 95123 Catania, Italy
10. Section of Obstetrics and Gynecology, Department of Medicine and Surgery, University of Perugia, 06135 Perugia, Italy
11. Department of Obstetrics and Gynecology, Helena Venizelou Hospital, 11521 Athens, Greece