1. Division of Dermatology, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy;
2. Cancer Research “Attilia Pofferi” Foundation, Pistoia, Italy;
3. Pathology Unit, Careggi University Hospital, Florence, Italy;
4. Division of Plastic Surgery, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy;
5. Department of Surgery, University of Perugia, Perugia, Italy