1. Medicine and Surgery Department, University of Parma, Parma, Italy
2. Medical Oncology Unit, University Hospital of Parma, Parma, Italy
3. Oncology Unit, ASST Bergamo Ovest, Treviglio, Italy
4. Skin Cancer Unit, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy