[1] Philipps Univ Marburg, Dermatol, Marburg, Germany
[2] Ludwig Maximilians Univ Munchen, Klin Dermatol & Allergol, Munich, Germany
[3] Univ Klinikum Lubeck, Klin Dermatol & Allergol, Lubeck, Germany
[4] Ludwig Maximilians Univ Munchen, Klin Anasthesiol, Munich, Germany
[5] Ludwig Maximilians Univ Munchen, Klin Med I, Munich, Germany