1. Lega Italiana per la Lotta ai Tumori; Provincial Section of Latina; Italy
2. AUSL Reggio Emilia; Epidemiology Unit; Reggio Emilia Italy
3. Screening Unit; Local Health Unit of Latina; Italy
4. Laziosanità; Public health agency; Lazio Region Rome Italy
5. AUSL di Bologna; UO Anatomia Patologica; Bologna Italy
6. Pathology Unit; S. Chiara Hospital of Trento; Italy
7. Unit of Pathology; OIRM S. Anna; Turin Italy
8. L'Aquila Screening Unit; Pescina (AQ); Italy
9. Department of Pathology Central Hospital Bolzano; Bolzano Italy
10. Anatomy Pathology Service; Azienda Ospedaliera S. Camillo-Forlanini; Rome Italy