1. Division of Experimental Allergy and Immunodermatology, Faculty of Medicine and Health Sciences, University of Oldenburg, 26129 Oldenburg, Germany
2. Department of Experimental Pain Research, MCTN, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany
3. University Clinic of Dermatology and Allergy, University of Oldenburg, 26133 Oldenburg, Germany