1. Department of Gastroenterology Kyoto Second Red Cross Hospital Kyoto Japan
2. Endoscopy Division National Cancer Center Hospital Tokyo Japan
3. Cancer Screening Center National Cancer Center Hospital Tokyo Japan
4. Department of Biostatistics Kyoto Prefectural University of Medicine Kyoto Japan
5. Department of Endoscopy The Jikei University Katsushika Medical Center Tokyo Japan
6. Department of Gastroenterology Kitasato University Kanagawa Japan
7. Oda GI Endoscopy and Gastroenterology Clinic Kumamoto Japan
8. Department of Therapeutic Oncology Kyoto University Kyoto Japan
9. Department of Gastroenterology and Hepatology Kyoto University Kyoto Japan
10. Department of Gastroenterology, Graduate School of Medicine The University of Tokyo Tokyo Japan
11. Department of Gastrointestinal Oncology Osaka International Cancer Institute Osaka Japan
12. Department of Genetic Oncology, Division of Hereditary Tumors Osaka International Cancer Institute Osaka Japan
13. Department of Gastroenterology and Endoscopy National Cancer Center Hospital East Chiba Japan
14. Department of Gastroenterology Shizuoka Medical Center Shizuoka Japan
15. Division of Gastroenterology and Hepatology Toho University Omori Medical Center Tokyo Japan