Institution: | 1. First Department of Internal Medicine, University of Yamanashi, , Yamanashi, Japan;2. Department of Radiology, University of Yamanashi, , Yamanashi, Japan;3. Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University, , Tokyo, Japan;4. Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, , Tokyo, Japan |