1. Department of Dermatology; Ruprecht-Karls-University of Heidelberg; Heidelberg Germany
2. Hamamatsu Tissue Imaging and Analysis Center; BIOQUANT; Heidelberg Germany
3. Department of Medical Oncology; National Center for Tumor Diseases Heidelberg; Ruprecht-Karls-University of Heidelberg; Heidelberg Germany
4. Department of Dermatology; University of Essen; Essen Germany