1. Department of Dermatology, Venereology and AllergologyUniversity Medical Center and Medical Faculty Mannheim, Heidelberg UniversityMannheim Germany
2. Department for Medical Statistics and BiomathematicsMedical Faculty Mannheim, Heidelberg UniversityMannheim Germany
3. Skin Cancer Unit, German Cancer Research Center (DKFZ)Heidelberg Germany
4. Institute of Pathology, University Medical Center and Medical Faculty Mannheim, Heidelberg UniversityMannheim Germany