1. Institute of Pathology; University Hospital Heidelberg; Heidelberg Germany
2. Institute of Pathology; Universitätsklinikum Erlangen; Erlangen Germany
3. Department of Gastroenterology, Toxicology and Infectious Diseases; University Hospital of Heidelberg; Heidelberg Germany
4. Medical Faculty Mannheim, Medical Research Center; University of Heidelberg; Mannheim Germany
5. Group Tumor and Microenvironment; German Cancer Research Center; Heidelberg Germany
6. Helmholtz-University Group, Cell Plasticity and Epigenetic Remodelling; German Cancer Research Center; Heidelberg Germany
7. Department of Medicine I; Johannes Gutenberg University; Mainz Germany