[1] Univ Milan, Fdn IRCCS Ca Granda Osped Maggiore Policlin, Milan, Italy
[2] IRCCS, European Inst Oncol, Milan, Italy
[3] Univ Milan, Fdn IRCCS Ca Granda Osped Maggiore Policlin, UOC Dermatol, Milan, Italy
[4] Med Univ Graz, Dept Dermatol, Graz, Austria
[5] Ist Dermatol San Gallicano IFO IRCCS, UOSD Dermatopatol & Biol Mol, Rome, Italy
[6] IRCCS Policlin St Orsola, UO Dermatol, Bologna, Italy