1. Regina Elena National Cancer Institute; HPV-Unit; Gynecologic Oncology; Rome Italy
2. Department of Obstetrics and Gynecology; University of Torino; Turin Italy
3. Villa Montallegro; Genoa Italy
4. Unità Ospedaliera Complessa Ginecologia Preventiva; Azienda Sanitaria Provinciale di Cosenza; Castrovillari Italy
5. Obstetrics and Gynecology; Ospedali Riuniti Villa Sofia Cervello; University of Palermo; Palermo Italy