1. Department of Dermatology, Venereology and Allergy, University Medical Center Mannheim, Ruprecht-Karls University of Heidelberg, Mannheim, Germany;
2. Division of Immunogenetics, and
3. Core Facility Tumor Models, German Cancer Research Center, Heidelberg, Germany;
4. Department of Dermatology, Venereology and Allergy, and
5. Institute of Pathology, University Medical Center Charité, Berlin, Germany; and
6. Department of Dermatology, Venereology and Allergy, HELIOS Klinikum, Krefeld, Germany