1. Department of GastroenterologyYokohama City University School of MedicineYokohama Japan
2. Department of Molecular Oncology, Graduate School of MedicineChiba UniversityChiba Japan
3. Department of GastroenterologyKanto Medical Center, NTT East Tokyo Japan
4. Department of Diagnostic PathologyKanto Medical Center, NTT East Tokyo Japan
5. Department of Pathology, Graduate School of Medicine, Research Center for Advanced Science and TechnologyThe University of Tokyo Tokyo Japan
6. Division of Molecular Diagnosis and Cancer PreventionSaitama Cancer CenterSaitama Japan
7. Genome Science Division, Research Center for Advanced Science and TechnologyThe University of Tokyo Tokyo Japan
8. CRESTJapan Agency for Medical Research and Development Tokyo Japan