1. Department of Cellular Neurophysiology Hannover Medical School Hannover Germany
2. Department of Nutritional Medicine University of Hohenheim Stuttgart Germany
3. Department of Dermatology and Allergy Hannover Medical School Hannover Germany
4. Division of Experimental Allergology and Immunodermatology University of Oldenburg Oldenburg Germany
5. University Clinic of Dermatology and Allergy University of Oldenburg Oldenburg Germany
6. Department of Dermatology and Center for Chronic Pruritus University Hospital Münster Münster Germany
7. Department of Dermatology Heinrich‐Heine‐University Düsseldorf Germany
8. Institute of Cytology and Genetics Novosibirsk Russia