1. Department of Dermatology; Environmental Medicine and Health Theory, University of Osnabrück; Osnabrück Germany
2. Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the University of Osnabrück; Osnabrück Germany
3. Lower-Saxonian Institute of Occupational Dermatology at the Georg-August University, Göttingen, Germany, and at the University of Osnabrück; Osnabrück Germany
4. Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm), BG Hospital Hamburg; Hamburg Germany
5. Information Network of Departments of Dermatology (IVDK), Georg-August University; Göttingen Germany