1. Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia, University of Catania, 95100 Catania, Italy
2. Department of Medicine and Surgery, University of Enna “Kore”, 94100 Enna, Italy
3. Gynecology and Obstetrics Department, Giovanni Paolo II Hospital, ASP 7, 97100 Ragusa, Italy
4. Gynecological Oncology Unit, Ospedale Cannizzaro, 95125 Catania, Italy