1. Department of Medical Informatics, Biometry and Epidemiology University of Erlangen/Nürnberg Erlangen Germany
2. Division of Allergy and Immunology, Department of Dermatology, Venereology and Allergy Charité ‐Universitätsmedizin Berlin Berlin Germany
3. Department of Dermatology, Environmental Medicine and Health Theory University of Osnabrück Osnabrück Germany
4. Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the University of Osnabrück Osnabrück Germany
5. Department of Dermatology University Hospital Erlangen, Medical Faculty Friedrich‐Alexander University Erlangen/Nürnberg Germany
6. Department of Dermatology University Hospital Carl Gustav Carus, Technical University of Dresden Dresden Germany
7. Information Network of Departments of Dermatology (IVDK) Institute at the University Medical Center Göttingen Göttingen Germany