1. Dermatology Unit; Department of Surgery and Translational Medicine; University of Florence Medical School; Florence Italy
2. Department of Medical Sciences; Dermatologic Clinic; University of Turin; Turin Italy
3. Clinic of Hematology; United Ancona Hospitals; Polytechnic University of Marche; Ancona Italy
4. Dermatology Unit; IRCCS Ca’ Granda - Ospedale Maggiore Policlinico; Milan Italy