1. Division of Gastroenterology and Hematology/Oncology Department of Medicine Asahikawa Medical University Asahikawa Japan
2. Department of Hospital Pharmacy and Pharmacology Asahikawa Medical University Asahikawa Japan
3. Clinical Research Support Center Asahikawa Medical University Hospital Asahikawa Japan
4. Department of Clinical Pharmacology and Therapeutics Kyoto University Hospital Kyoto Japan
5. Department of Gastroenterology Asahikawa City Hospital Asahikawa Japan