1. Division of Pathology, Exploratory Oncology, & Clinical Trial Center (EPOC), National Cancer Center
2. Surgery
3. Clinical Research and Trial Center, Juntendo University School of Medicine
4. Department of Coloproctological Surgery, Juntendo University Faculty of Medicine
5. Colorectal Surgery
6. Department of Surgery, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo
7. Department of Surgery, Tobu Chiiki Hospital, Metropolitan Health and Medical Treatment Corporation
8. Pathology and Clinical Laboratories
9. Department of Diagnostic Pathology, Kurume University Hospital
10. Department of Pathology, Moffitt Cancer Center, Tampa, FL
11. Colorectal Surgery, National Cancer Center Hospital
12. Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka Prefecture, Japan
13. Anatomic Pathology, Kurashiki Central Hospital, Kurashiki, Okayama Prefecture
14. Department of Human Pathology, Graduate School of Medicine, Juntendo University, Tokyo
15. Department of Pathology and Laboratory Medicine, Veterans General Hospital-Taipei, Taipei, Republic of China
16. Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba Prefecture