1. Skin Cancer Unit IRCCS Istituto Romagnolo per Lo Studio Dei Tumori (IRST) “Dino Amadori” Meldola Italy
2. Dermatology Unit, Department of Clinical and Experimental Medicine University of Parma Parma Italy
3. Patologic Anatomy, AUSL Della Romagna Santa Maria Delle Croci Hospital Ravenna Italy
4. Dermatology Unit Bufalini Hospital Cesena Italy
5. Dermatology Unit, IRCCS Azienda Ospedaliero‐Universitaria di Bologna, Department of Medical and Surgical Sciences Alma Mater Studiorum University of Bologna Bologna Italy
6. Dermatology Unit, Department of Medicine (DIMED) University of Padua Padova Italy
7. Dermatology Unit San Bortolo Hospital Vicenza Italy