1. Division of Tumor Pathology, Department of Pathology Asahikawa Medical University Asahikawa Japan
2. Department of Oncology‐Pathology Karolinska Institutet Stockholm Sweden
3. Department of Legal Medicine International University of Health and Welfare Narita Japan
4. Division of Metabolism and Biosystemic Science, Gastroenterology and Hematology/Oncology, Department of Medicine Asahikawa Medical University Asahikawa Japan
5. Department of Emergency Medicine Asahikawa Medical University Asahikawa Japan
6. Department of Gastroenterology and Advanced Medical Sciences Asahikawa Medical University Asahikawa Japan
7. Asahikawa Medical University Asahikawa Japan