1 Division of Melanoma, Sarcoma and Rare Tumors, IRCCS, European Institute of Oncology, Milan, Italy.
2 Unit of Dermatology, Department of Experimental Diagnostic and Specialty Medicine, Policlinico Sant' Orsola-Malpighi, University of Bologna, Bologna, Italy.
3 Unit of Preventive Gynecology, IRCCS, European Institute of Oncology, Milan, Italy.
4 Pathology Division, IRCCS, European Institute of Oncology, Milan, Italy.
5 Unit of Dermatology, USL Toscana Centro-Prato Hospital, Prato, Italy.