1. Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine Asahikawa Medical University Asahikawa Hokkaido Japan
2. Asahikawa City Hospital Asahikawa Hokkaido Japan
3. Asahikawa Kosei General Hospital Asahikawa Hokkaido Japan
4. Nayoro City General Hospital Nayoro Hokkaido Japan
5. Engaru Kosei General Hospital Hokkaido Japan