1. Department of Dermatology, Venereology and Allergology University Medical Center Göttingen Göttingen Germany
2. Pharmacy University Medical Center Göttingen Göttingen Germany
3. Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen Göttingen Germany
4. Information Network of Departments of Dermatology (IVDK) Institute at the University Medical Center Göttingen Göttingen Germany