1. Department of Gastroenterology/Internal Medicine, Graduate School of Medicine, Gifu University, Gifu 501-1194, Japan
2. Health Administration Center, Gifu University, Gifu 501-1193, Japan
3. Center for Nutrition Support & Infection Control, Gifu University Hospital, Gifu 501-1194, Japan
4. Department of Gastroenterology, Asahi University Hospital, Gifu 501-1194, Japan
5. Division for Regional Cancer Control, Graduate School of Medicine, Gifu University, Gifu 501-1194, Japan
6. United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1194, Japan