1. Department of Pathology National Hospital Organization Kyushu Cancer Center Fukuoka Japan
2. Department of Pathology Kurume University School of Medicine Kurume Japan
3. Department of Diagnostic Pathology Kurume University Hospital Kurume Japan
4. Department of Pathology Saitama Medical University Saitama Japan
5. Department of Anatomic Pathology Graduate School of Medical Sciences, Kyushu University Fukuoka Japan
6. Division of Pathology Shizuoka Cancer Center Shizuoka Japan
7. Department of Gastroenterology Onomichi General Hospital Hiroshima Japan
8. Department of Pathology, Field of Oncology Graduate School of Medical and Dental Sciences, Kagoshima University Kagoshima Japan
9. Department of Diagnostic Pathology Kobe University Graduate School of Medicine Kobe Japan
10. Pathology Division Mie University Hospital Tsu Japan
11. Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine Asahikawa Medical University Asahikawa Japan
12. Department of Gastroenterology Sapporo‐Kosei General Hospital Sapporo Japan
13. Division of Gastroenterology, Department of Medicine Kurume University School of Medicine Kurume Japan
14. Division of Pathology Saiseikai Fukuoka General Hospital Fukuoka Japan
15. Department of Pathology University of Occupational and Environmental Health Kitakyushu Japan
16. Department of Pathology Saitama Medical University International Medical Center Hidaka Japan