1. Department of Gastroenterology, St. Luke's International Hospital
2. Gastroenterological Endoscopy, Tokyo Medical University
3. Department of Gastroenterology, Toyonaka Municipal Hospital
4. Department of Gastroenterology, Nagasaki Harbor Medical Center
5. Department of Gastroenterology, Fukui Prefectural Hospital
6. Department of Gastroenterology, Ishikawa Prefectural Central Hospital
7. Department of Gastroenterology, Tonan Hospital
8. Department of Gastroenterology, Otaru Ekisaikai Hospital
9. Department of Gastroenterology, Shuto General Hospital
10. Department of Gastroenterology and Hepatology, National Center for Global Health and Medicine Kohnodai Hospital
11. Department of Gastroenterology, Japan Community Healthcare Organization Osaka Hospital
12. Department of Information and Computer Technology, Faculty of Engineering, Tokyo University of Science
13. Department of Gastroenterology, Graduate School of Medicine, the University of Tokyo