1. Division of Molecular and Cellular Signaling; Department of Biochemistry and Molecular Biology; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan
2. Division of Gastroenterology; Department of Internal Medicine; Kobe University Graduate School of Medicine; 7-5-1 Kusunoki-cho Chuo-ku Kobe 650-0017 Japan