1. Department of Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany;
2. Max-Eder-Group Experimental Therapies for Hematologic Malignancies, German Cancer Research Center (DKFZ) and University Hospital Heidelberg, Heidelberg, Germany;
3. Institute for Pathology, Ludwigshafen Hospital, Ludwigshafen, Germany;
4. Institute for Pathology, University Hospital Heidelberg, Heidelberg, Germany;
5. National Center for Tumor Diseases, Heidelberg, Germany