1. Department of Dermatology, Venereology and Allergology University Medical Center Göttingen Göttingen Germany
2. Department of Animal Sciences University of Göttingen Göttingen Germany
3. Department of Dermatology, Venereology and Allergology University Medical Center Münster Münster Germany
4. Faculty of Resource Management HAWK Göttingen Göttingen Germany
5. Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen Göttingen Germany
6. Information Network of Departments of Dermatology (IVDK) University Medical Center Göttingen Göttingen Germany