1. Department of Dermatology, Environmental Medicine and Health Theory; University of Osnabrück; 49090 Osnabrück Germany
2. Institute for Interdisciplinary Dermatologic Prevention and Rehabilitation (iDerm) at the University of Osnabrück and Dermatologic Centre; Trauma Hospital; 21033 Hamburg Germany
3. Department of Clinical Social Medicine, Occupational and Environmental Dermatology; University of Heidelberg; 69115 Heidelberg Germany
4. Department of Dermatology; University Hospital Jena; 07743 Jena Germany
5. Statutory Accident Insurance Clinic of Occupational Diseases; 08233 Falkenstein Germany
6. Clinic for Occupational Diseases of the VBG (Statutory Accident Insurance); 83435 Bad Reichenhall Germany