1. Division of Gastroenterology and Hepatology; St. Marianna University School of Medicine; Kawasaki Japan
2. Department of Pharmacology; St. Marianna University School of Medicine; Kawasaki Japan
3. Experimental Animals Institution; St. Marianna University Graduate School of Medicine; Kawasaki Japan
4. Division of Gastroenterological Surgery; St. Marianna University School of Medicine; Kawasaki Japan