1. Institute of Pathology, University Hospital Heidelberg; Heidelberg Germany
2. Institute of Pathology, University of Greifswald; Greifswald Germany
3. Georg-Speyer-Haus, Institute for Tumor Biology and Experimental Therapy; Frankfurt/Main Germany
4. Department of Bioengineering and Therapeutic Sciences; University of California; San Francisco CA USA
5. Division of Translational Gastrointestinal Oncology; Department of Internal Medicine I; University of Tübingen; Tübingen Germany
6. Department of Medicine and Aging; University of Chieti; Chieti Italy
7. Institute of Medical Biometry and Informatics, University Hospital Heidelberg; Heidelberg Germany
8. Division of Molecular Genetics; German Cancer Research Center; Heidelberg Germany