1. Psoriasis-Center, Department of Dermatology, University Medical Center Schleswig-Holstein, Kiel, Germany
2. Physiologisches Institut, Abteilung für Vegetative und Klinische Physiologie, Eberhard Karls University of Tübingen, Tübingen, Germany
3. Department of Dermatology and Allergology, School of Medicine, Technical University of Munich, München, Germany