[1] Cancer Institute Hospital of Japanese Foundation for Cancer Research,Department of Esophageal Surgery, Gastroenterology Center
[2] Keio University,Department of Preventive Medicine and Public Health, School of Medicine
[3] Keio University,Department of Surgery, School of Medicine
[4] Keio University Hospital,Biostatistics Unit, Clinical and Translational Research Center
[5] Hamamatsu University School of Medicine,Department of Surgery
[6] Kyoto University Graduate School of Medicine,Department of Therapeutic Oncology
[7] Kobe University,Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine
[8] Osaka University Graduate School of Medicine,Department of Gastroenterological Surgery