Affiliation: | 1. Tsumura Research Laboratories, Tsumura & Co., , Ibaraki, Japan;2. Pathophysiology and Therapeutics, Faculty of Pharmaceutical Sciences, Hokkaido University, , Sapporo, Hokkaido, Japan;3. Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, , Sapporo, Hokkaido, Japan |