1. Section of Dermatology, Department of Health Sciences, University of Florence, Florence, Italy
2. Cancer Research “AttiliaPofferi” Foundation, Pistoia, Italy
3. Clinica Luganese Moncucco, Lugano, Switzerland
4. Section of Anatomic Pathology, Department of Health Sciences, University of Florence, Florence, Italy
5. Department of Surgery, University of Perugia, Perugia, Italy