Institution: | 1. Division of Gastroenterology, Department of Internal Medicine, Iwate Medical University, Morioka, Japan;2. Division of Gastroenterology, Matsuyama Red Cross Hospital, Matsuyama, Japan;3. Department of Pathology, Matsuyama Red Cross Hospital, Matsuyama, Japan;4. Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan;5. Division of Gastroenterology, Fukuoka Sanno Hospital, Fukuoka, Japan;6. Department of Diagnostic Pathology, Iwate Medical University, Morioka, Japan |