[1] Univ Bologna, Dept Expt Diagnost & Specialty Med, Alma Mater Studiorum, Bologna, Italy
[2] IRCCS Azienda Osped Univ Bologna, Dermatol Unit, Bologna, Italy
[3] Arcispedale Santa Maria Nuova IRCCS, Dermatol Unit, Reggio Emilia, Italy
[4] Univ Modena & Reggio Emilia, Dept Surg Med Dent & Morphol Sci Related Transpla, Dermatol Unit, Modena, Italy
[5] AUSL Romagna, Dermatol Unit, Ravenna, Italy
[6] Univ Parma, Dept Med & Surg, Dermatol, Parma, Italy