[1] Univ Klinikum Erlangen, Hautklin, Erlangen, Germany
[2] Johannes Gutenberg Univ Mainz, Hautklin, Univ Med, Mainz, Germany
[3] Charite, Klin Neurol, Berlin, Germany
[4] Hannover Med Sch, Klin Dermatol Allergol & Venerol, Hannover, Germany
[5] Univ Spital Zurich, Dermatol Klin, Zurich, Switzerland
[6] Tech Univ Dresden, Univ Klinikum Carl Gustav Carus Dresden, Klin & Poliklin Dermatol & Allergol, Dresden, Germany
[7] Ludwig Maximilian Univ Munich, Klin & Poliklin Dermatol & Allergol, Munich, Germany
[8] Univ Klinikum Schleswig Holstein, Klin Dermatol Allergol & Venerol, Lubeck, Germany
[9] Univ Med Gottingen, Klin Dermatol Allergol & Venerol, Gottingen, Germany
[10] Univ Klinikum Essen, Klin Dermatol, Essen, Germany
[11] Univ Klinikum Saarlandes, Klin Dermatol Venerol & Allergol, Homburg, Germany