1. Department of Dermatology, Environmental Medicine and Health Theory; University of Osnabrück; D-49090 Osnabrück Germany
2. Institute for Interdisciplinary Dermatologic Prevention and Rehabilitation (iDerm), University of Osnabrück; D-49090 Osnabrück Germany
3. Lower-Saxonian Institute of Occupational Dermatology, University of Osnabrück; D-49090 Osnabrück Germany
4. FB 7 Psychology: Methodology & Statistics; University of Münster; D-48149 Münster Germany