Affiliation: | 1. Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, Yokohama, Japan;2. Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, Yokohama, Japan Department of Gastroenterology, National Hospital Organization Yokohama Medical Center, Yokohama, Japan;3. Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, Yokohama, Japan Department of Gastroenterology and Endoscopy, Shinyurigaoka General Hospital, Kawasaki, Japan;4. Department of Clinical Laboratory, Yokohama City University School of Medicine Graduate School of Medicine, Yokohama, Japan |