1. Section of Anatomic Pathology Department of Health Sciences University of Florence Florence Italy
2. Methodology for Clinical Research Laboratory Istituto di Ricerche Farmacologiche Mario Negri IRCCS Milan Italy
3. Department of Pathology and Laboratory Medicine Fondazione IRCCS Istituto Nazionale dei Tumori di Milano Milan Italy
4. Units of Pathology Papa Giovanni XXIII Hospital Bergamo Italy
5. Department of Dermatology University of Florence Italy
6. Anatomia e Istologia Patologica Azienda Ospedaliera Santa Croce e Carle di Cuneo SC Cuneo Italy
7. Units of Medical Oncology Papa Giovanni XXIII Hospital Bergamo Italy
8. Melanoma and Sarcoma Unit Department of Surgery Fondazione IRCCS Istituto Nazionale dei Tumori di Milano Milan Italy
9. Pathological Anatomy and Histology Veneto Institute of Oncology IOV – IRCCS Padua Italy
10. Oncologia Azienda Ospedaliera Santa Croce e Carle di Cuneo SC Cuneo Italy
11. Units of Surgery Papa Giovanni XXIII Hospital Bergamo Italy
12. Melanoma and Esophageal Oncology Unit Veneto Institute of Oncology IOV – IRCCS PaduaItaly
13. Dermatologic Clinic Department of Medical Sciences University of Turin Medical School Turin Italy
14. Department of Pathology Azienda ULSS8 Berica‐San Bortolo Hospital Vicenza Italy
15. Units of Dermatology Papa Giovanni XXIII Hospital Bergamo Italy
16. Pathology Division Department of Oncology University of Turin Turin Italy
17. University of Tokyo Japan
18. Unit of Cancer Genetics ICB‐CNR Sassari Italy