1. Department of Gastrointestinal Oncology Osaka International Cancer Institute Osaka Japan
2. Engineering AI Medical Service Inc. Tokyo Japan
3. Department of Gastroenterology and Hepatology Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
4. Center for Gastroenterology Teine Keijinkai Hospital Sapporo Japan
5. Department of Gastroenterology and Hepatology Japanese Red Cross Society Wakayama Medical Center Wakayama Japan
6. Department of Gastroenterology Tada Tomohiro Institute of Gastroenterology and Proctology Saitama Japan