1. Department of Gastroenterology and Hepatology, Faculty of Medicine; Shimane University; Izumo Shimane Japan
2. Tokyo R&D Center, Miyarisan Pharmaceutical Co. Ltd.; Saitama Japan
3. Department of Oral and Maxillofacial Surgery, Faculty of Medicine; Shimane University; Izumo Shimane Japan
4. Division of Gastrointestinal Endoscopy; Shimane University Hospital; Izumo Shimane Japan
5. Department of Pharmacology, Faculty of Medicine; Shimane University; Izumo Shimane Japan