[1] Univ Magdeburg, Dept Dermatol & Venereol, Magdeburg, Germany
[2] Univ Ferrara, Dept Clin & Expt Med, OU Dermatol, Azienda Osped Univ, Ferrara, Italy
[3] Univ Antwerp, Univ Antwerp Hosp, Dept Dermatol, Edegem, Belgium
[4] First IP Pavlov State Med Univ St Petersburg, Dept Dermatol & Venereal Dis, St Petersburg, Russia
[5] Univ Nis, Dept Dermatovenerol, Fac Med, Nish, Serbia
[6] Univ Athens, A Syggros Hosp, Dept Dermatol, Athens, Greece
[7] United Arab Emirates Univ, Sch Med, Al Ain, U Arab Emirates
[8] Vilnius Univ, Clin Infect Chest Dis Dermatovenereol & Allergol, Vilnius, Lithuania
[9] Gazi Univ, Dept Dermatol, Sch Med, Ankara, Turkey
[10] Hautzentrum Zurich, Zurich, Switzerland
[11] Univ Szeged, Dept Dermatol & Allergol, Szeged, Hungary
[12] Hosp Univ Fdn Alcorcon, Madrid, Spain
[13] Clin Dermatol Dr Antonio Massa, Oporto, Portugal
[14] Karolinska Univ, Huddinge Hosp, Karolinska Inst, Dept Lab Med, Stockholm, Sweden
[15] Diagnost Ctr Hud, Stockholm, Sweden
[16] Univ Free State, Fac Hlth Sci, Dept Dermatol, Bloemfontein, South Africa
[17] Wroclaw Med Univ, Dept Dermatol Venereol & Allergol, Wroclaw, Poland
[18] Univ Nantes, Dept Dermatocancerol, Nantes, France