Affiliation: | 1. Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan;2. Department of Gastroenterology and Hepatology, Tokyo Medical University, Japan;3. Department of Gastroenterology, Aichi Cancer Center Hospital, Aichi, Japan;4. First Department of Internal Medicine, Gifu University Hospital, Gifu, Japan;5. Department of Gastroenterology, Dokkyo Medical University, Tochigi, Japan Department of Gastroenterology, Aizu Medical Center, Fukushima Medical University, Fukushima, Japan;6. Department of Gastroenterology, Aichi Cancer Center Hospital, Aichi, Japan Department of Hepatobiliary and Pancreatic Oncology, National Cancer Center Hospital East, Chiba, Japan;7. First Department of Internal Medicine, Gifu University Hospital, Gifu, Japan Department of Gastroenterology, Teikyo University Mizonokuchi Hospital, Kanagawa, Japan;8. Department of Medical Statistics, Toho University, Tokyo, Japan;9. Department of Molecular-Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan |