1. Institute for Interdisciplinary Dermatologic Prevention and Rehabilitation (iDerm) University of Osnabrück Osnabrück Germany
2. Department of Dermatology Environmental Medicine and Health Theory, University of Osnabrück Osnabrück Germany
3. Dermatologic Centre BG Klinikum Hamburg Hamburg Germany
4. Department of Dermatology University Allergy Center, University Hospital Carl Gustav Carus, Technical University Dresden Dresden Germany
5. Division of Occupational Dermatology, Department of Dermatology Ruprecht Karls University Heidelberg Heidelberg Germany
6. Information Network of Department of Dermatology (IVDK) Institute at the University Medical Center Göttingen Göttingen Germany