1. Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim 7491, Norway.
2. Division of Digestive and Liver Diseases, Columbia University College of Physicians and Surgeons, New York, NY 10032–3802, USA.
3. Division of Comparative Medicine, Massachusetts Institute of Technology, Boston, MA 02139, USA.
4. Medizinische Klinik III, Klinikum der Universität München, Campus Groβhadern, 81377 München, Germany.
5. Department of Surgery, St. Olavs University Hospital, Trondheim 7006, Norway.
6. Biomedical Informatics Shared Resource, Herbert Irving Comprehensive Cancer Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA.
7. Department of Gastrointestinal and Liver Diseases, St. Olavs University Hospital, Trondheim 7006, Norway.
8. Department of Tumor Pathology, Gifu University Graduate School of Medicine, Gifu 501-1112, Japan.
9. II. Medizinische Klinik, Klinikum rechts der Isar, Technische Universität München, München 81675, Germany.
10. Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA.
11. Department of Gastroenterology and Endoscopy Division, National Cancer Center Hospital East, Chiba 277-8577, Japan.