1. Oncology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
2. Dermatology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
3. UOSD Dermatology, USL Toscana Centro-Prato Hospital, 59100 Prato, Italy
4. Section of Dermatology, Department of Health Sciences, University of Florence, 50134 Florence, Italy
5. Medical Oncology Department, University of Cagliari, 09042 Cagliari, Italy
6. Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy