[1] Tech Univ Munich, Fak Med, Klin & Poliklin Dermatol & Allergol Biederstein, Biedersteiner Str 29, D-80802 Munich, Germany
[2] Karolinska Inst, Dept Med Solna, Div Dermatol & Venereol, Stockholm, Sweden
[3] Univ Med Greifswald, Klin & Poliklin Hautkrankheiten, Ferdinand Sauerbruch Str 1, D-17475 Greifswald, Germany