1. Gynecology and Obstetrics Unit, Department of General Surgery and Medical-Surgical Specialty, Rodolico University Hospital, University of Catania, 95124 Catania, Italy
2. Multidisciplinary Research Center in Papillomavirus Pathology, Chirmed, University of Catania, 95123 Catania, Italy
3. Humanitas, Gynaecologic Oncology Unit, 95045 Catania, Italy
4. Cervical Cancer Screening Unit, Level II, ASP Messina, 98123 Messina, Italy