[1] Ctr Hosp Univ Santo Antonio Porto, Dept Dermatol, Porto, Portugal
[2] Univ Porto, Inst Ciencias Biomed Abel Salazar, Porto, Portugal
[3] Univ Toronto, Dept Med, Div Dermatol, Toronto, ON, Canada
[4] Womens Coll Hosp, Dept Med, Div Dermatol, Toronto, ON, Canada
[5] Sunnybrook Hlth Sci Ctr, Dept Med, Div Dermatol, Toronto, ON, Canada
[6] Prob Med Res, Toronto, ON, Canada
[7] Univ Calgary, Dept Med, Div Dermatol, Calgary, AB, Canada
[8] Dermatol Res Inst, Calgary, AB, Canada
[9] Skin Hlth & Wellness Ctr, Calgary, AB, Canada
[10] Prob Med Res, Calgary, AB, Canada
[11] Univ Turin, Dept Med Sci, Dermatol Clin, Turin, Italy
[12] Univ Campania Luigi Vanvitelli, Unit Dermatol, Naples, Italy
[13] Fdn IRCCS Ca Granda Osped Maggiore Policlin, Dermatol Unit, Milan, Italy
[14] Univ Milan, Dept Pathophysiol & Transplantat, Milan, Italy
[15] Unidade Local Saude Sao Joao, Dept Dermatol, Porto, Portugal
[16] Univ Porto, Fac Med, Porto, Portugal
[17] Ctr Hosp Univ Lisboa Cent, Neurol Dept, Lisbon, Portugal
[18] Aristotle Univ Thessaloniki, Dept Dermatol & Venereol, Sch Med, Thessaloniki, Greece
[19] Hosp Univ Germans Trias i Pujol, Barcelona, Spain
[20] Univ Toronto, Temerty Fac Med, Toronto, ON, Canada
[21] Univ Florence, Dept Hlth Sci, Dermatol Sect, Florence, Italy
[22] Univ Cattolica Sacro Cuore, Dipartimento Univ Med & Chirurg Traslaz, Dermatol, Rome, Italy
[23] Fdn Policlin Univ A Gemelli IRCCS, Dipartimento Sci Med & Chirurg, UOC Dermatol, Rome, Italy
[24] Harvard Med Sch, Beth Israel Deaconess Med Ctr, Dept Med, Boston, MA USA
[25] Univ Hosp Bern, Dept Dermatol, Inselspital, Bern, Switzerland
[26] Charles Univ Prague, Univ Hosp Kralovske Vinohrady, Fac Med 3, Stare Mesto, Czech Republic
[27] Charles Univ Prague, Fac Med 3, Stare Mesto, Czech Republic