1. Department of Oncology Fatebenefratelli, ASST Fatebenefratelli Sacco, Milan, Italy
2. Department of Pathology, ASST Fatebenefratelli & Sacco, Milan, Italy
3. Department of Dermatology, Umberto I Hospital Lugo, (Ravenna), Italy
4. Department of Plastic Surgery, Fatebenefratelli, ASST Fatebenefratelli & Sacco, Milan, Italy
5. Department of Dermatology, Fondazione IRCCS Ca’Granda Ospedale Maggiore Policlinico, Milan, Italy
6. Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Italy