[1] Univ Parma, Dermatol Clin, Parma, Italy
[2] Univ Genoa, Dermatol Clin, Genoa, Italy
[3] Univ Milan, Dept Med Surg Physiopathol & Transplantat, IR CCS Ca Granda Fdn, Unit Dermatol,Maggiore Policlin Hosp, Milan, Italy
[4] Univ Florence, Piero Palagi Hosp, Unit Dermatol, Usl Toscana Ctr,SOS Rare Dermatol Dis, Florence, Italy
[5] Ist Dermopat Immacolata IDI IRCCS, Mol & Cell Biol Lab, Rome, Italy
[6] Univ Brescia, Dermatol Clin, Brescia, Italy