1. Department of Dermatology and Venereology HELIOS Klinikum Krefeld Krefeld Germany
2. Department of Dermatology and Venereology University Hospital Hamburg‐ Eppendorf Hamburg Germany
3. Department of Dermatology Ludwigshafen Medical Center Ludwigshafen Germany
4. Department of Dermatology Lausanne University Hospital Faculty of Biology and Medicine University of Lausanne Lausanne Switzerland
5. Department of Dermatology Medical University of Vienna Vienna Austria
6. Department of Dermatology and Skin Tumor Center Karlsruhe Medical Center Karlsruhe Germany Academic Teaching Hospital of the University of Freiburg Freiburg Germany
7. Department of Dermatology Venereology and Allergology University Medical Center Mannheim Mannheim Germany
8. Department of Dermatology Venereology and Allergology Skin Tumor Center Charité – Universitätsmedizin Berlin corporate member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Berlin Germany
9. Department of Dermatology Venereology and Allergology Würzburg University Hospital Würzburg Germany
10. Department of Dermatology and Venereology University Hospital St. Pölten Karl Landsteiner University of Health Sciences St. Pölten Austria