[1] IRCCS, Arcispedale S Maria Nuova, Dermatol & Skin Canc Unit, I-42100 Reggio Emilia, Italy
[2] SM Annunziata Hosp, Tuscan Tumour Inst ITT, Reg Melanoma Referral Ctr, Dept Plast Surg, Florence, Italy
[3] Magna Graecia Univ Catanzaro, Dept Hlth Sci, Dermatol, Catanzaro, Italy
[4] Santa Maria & San Gallicano Dermatol Inst, Melanoma Unit, Rome, Italy
[5] Univ Bologna, St Orsola Malpighi Hosp, Bologna, Italy
[6] Infermi Hosp, Dept Surg, Dermatol Unit, Rimini, Italy
[7] Univ Hosp Brescia, Dept Dermatol, Brescia, Italy
[8] Univ Modena & Reggio Emilia, Dept Dermatol, Modena, Italy
[9] Univ Aquila, Dept Dermatol, I-67100 Laquila, Italy
[10] Univ Florence, Dept Dermatol Sci, Florence, Italy
[11] Univ Turin, Dept Med Sci, Dermatol Clin, Turin, Italy
[12] Univ Roma La Sapienza, Policlin Umberto I, Dermatol Clin, Rome, Italy
[13] IRCCS, IRST, Ist Sci Romagnolo Studio & Cura Tumori Meldola, Skin Canc Unit, Forli Cesena, Italy
[14] European Inst Oncol, Dermatoncol Div, Milan, Italy
[15] Med Univ Graz, Dept Dermatol, Graz, Austria