1. Department of Dermatology, Environmental Medicine and Health Theory University of Osnabrück Osnabrück Germany
2. Institute for Interdisciplinary Dermatologic Prevention and Rehabilitation (iDerm) University of Osnabrück Osnabrück Germany
3. Lower Saxony Institute of Occupational Dermatology University of Osnabrück Osnabrück Germany
4. Department of Dermatology, Allergology and Venereology University Hospital Schleswig‐Holstein Kiel Germany
5. Department of Dermatology, Venereology and Allergology University Medical Center Göttingen Göttingen Germany
6. Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen Göttingen Germany
7. Information Network of Departments of Dermatology (IVDK) Institute at the University Medical Center Göttingen Göttingen Germany