1. International Trials Management Section, Clinical Research Support Office, National Cancer Center Hospital, Japan
2. Medical Department, EORTC Headquarters, Belgium
3. Department of Gastroenterology, Saitama Cancer Center, Saitama
4. Esophageal Surgery Division, National Cancer Center Hospital, Japan
5. JCOG Data Center/Operations Office, National Cancer Center Hospital, Tokyo
6. Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba
7. Division of Radiation Oncology, Shizuoka Cancer Center, Shizuoka
8. Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Kanagawa
9. Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University
10. Department of Gastroenterology, Hyogo Cancer Center
11. Gastrointestinal Medical Oncology Division, National Cancer Center Hospital, Tokyo
12. Department of Surgery, Keio University School of Medicine, Tokyo, Japan