1. Department of Dermatology Faculty of Medicine Ruhr University Bochum Bochum Germany
2. Department of Dermatology, Hospital das Clínicas University of São Paulo São Paulo SP Brazil
3. Department of Animal Physiology Ruhr‐University Bochum Germany
4. CentroDerm GmbH Wuppertal Germany
5. Heinz‐Werner‐Seifert‐Institute of Dermatopathology Bonn Germany
6. Department of Dermatology and Allergology Vest Hospital Academic Teaching Hospital University of Bochum Recklinghausen Germany
7. Faculty of Health University Witten‐Herdecke Witten Germany