Affiliation: | 1. Department of Gastroenterology, Shinshu University School of Medicine, , Matsumoto, Japan;2. Endoscopic Examination Center, Shinshu University Hospital, , Matsumoto, Japan;3. Department of Laboratory Medicine, Shinshu University Hospital, , Matsumoto, Japan;4. Department of Pediatrics, Shinshu University School of Medicine, , Matsumoto, Japan |