1. Pathology Unit, S. Chiara Hospital of Trento, Trento, Italy
2. Agency for Public Health, Lazio Region, Rome
3. Pathology Unit, Maggiore Hospital of Bologna, Bologna
4. Department of Human Pathology and Oncology, University of Firenze, Firenze
5. Pathology Unit, S. Anna Hospital of Torino, Torino
6. Unit of Pathology, Ospedale Borgo Trento, Verona
7. Section of Cytopathology, Hospital of Padova, Padova
8. Pathology Unit, Hospital of Imola, Bologna
9. Pathology Unit, Hospital of Faenza, Ravenna
10. Pathology Unit, “Belcolle” Hospital of Viterbo, Viterbo
11. Centro per la Prevenzione Oncologica, Torino