1. Department of Surgery National Hospital Organization Iwakuni Clinical Center Yamaguchi Japan
2. Department of Neurosurgery Brigham and Women's Hospital, Harvard Medical School Boston Massachusetts USA
3. Department of Gastroenterological Surgery Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
4. Division of Tumor Biology and Immunology The Netherlands Cancer Institute, Oncode Institute Amsterdam The Netherlands
5. Department of Pathology National Hospital Organization Iwakuni Clinical Center Yamaguchi Japan
6. Department of Genetic Medicine Kyoundo Hospital, SSasaki Foundation Tokyo Japan
7. Division of Molecular Diagnosis and Cancer Prevention Saitama Cancer Center Saitama Japan
8. Department of Digestive Tract and General Surgery, Saitama Medical Center Saitama Medical University Kawagoe Japan