1. Section of Dermatology, Department of Health Sciences, University of Florence, 50121 Florence, Italy
2. Cancer Research “Attilia Pofferi” Foundation, 51100 Pistoia, Italy
3. Skin Cancer Unit, Istituto Scientifico Romagnolo per lo Studio dei Tumori “Dino Amadori” (IRST) IRCCS, 47014 Meldola, Italy
4. Dermatology Section, Department of Medicine and Surgery, University of Perugia, 06156 Perugia, Italy
5. Dermatology Unit, Department Medicine and Surgery, University of Parma, 43121 Parma, Italy
6. Surgical Oncology Section, Department of Medicine and Surgery, University of Perugia, 06156 Perugia, Italy