1. Information Network of Departments of Dermatology (IVDK) Institute at the University Medical Center Göttingen Göttingen Germany
2. Department of Dermatology Bethesda Hospital Freudenberg Germany
3. Occupational Dermatology, Department of Dermatology Ruprecht‐Karl University Heidelberg Heidelberg Germany
4. Department of Dermatology and Venereology Medical University of Graz Graz Austria
5. Department of Dermatology and Allergy, Division of Immunodermatology and Allergy Research Hannover Medical School Hannover Germany
6. Department of Dermatology and Allergology Ludwig‐Maximilian University of Munich Munich Germany
7. Institute for Interdisciplinary Dermatologic Prevention and Rehabilitation (iDerm) of the University of Osnabrück and Dermatologic Center, BG Trauma Hospital Hamburg Hamburg Germany
8. Department of Dermatology, Venereology and Allergy University Medical Center Göttingen Göttingen Germany