R Panzer1, R Happle2, R Fölster-Holst1. 1. Department of Dermatology, Allergology and Venerology, University Hospitals Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, 24105, Kiel, Germany. 2. Department of Dermatology, Freiburg University Medical Center, 79104, Freiburg, Germany.