Osaka University, Hamamatsu University, Osaka University - Department of Gastroenterological Surgery, Japanese Foundation for Cancer Research - Cancer Institute Hospital, Shizuoka Cancer Centre, Kindai University, Gifu University - Department of Tumor Pathology, National Cancer Center Hospital East, Saitama University - University International Medical Centre, Kanagawa Cancer Center, Yokohama City University, University of Tokyo, Kansai Rosai Hospital, Wakayama Medical University - Clinical Study Support Centre, Japanese Foundation for Cancer Research - Cancer Institute Hospital and Keio University - Department of Surgery

National Cancer Center Hospital - Department of Gastric Surgery, Shizuoka Cancer Centre, National Cancer Center Hospital, Cancer Institute Ariake Hospital, Keiyukai Sapporo Hospital, Kanagawa Cancer Center, Toyama Prefectural Central Hospital, Yamagata Prefectural Central Hospital, National Hospital Organization Shikoku Cancer Center, Hiroshima City Hiroshima Citizens Hospital, Niigata Cancer Center Hospital, Gifu University - Department of Tumor Pathology, Aichi Cancer Center, Kansai Rosai Hospital, Hyogo Cancer Center, Nagaoka Chuo General Hospital, National Cancer Center Hospital, Nagoya University - Graduate School of Medicine, National Cancer Center Hospital, Cancer Institute Ariake Hospital and Hyogo College of Medicine

Gifu University - Department of Tumor Pathology, Gifu University - Department of Tumor Pathology, Gifu University - Division of Animal Experiment, Gifu University - Department of Emergency and Disaster Medicine, Gifu University - Department of Surgical Oncology, Gifu University - Department of Gastroenterology, Gifu University - Department of Gastroenterology, Asahi University - Department of Pathology, Gifu University - Department of Tissue and Organ Development, Gifu University - Department of Tumor Pathology, Gifu University - Department of Tumor Pathology, Gifu University - Department of Tumor Pathology, Gifu University - Department of Tumor Pathology, Gifu University - Department of Pathology, Gifu University - Department of Pathology, Gifu Municipal Hospital - Department of Diagnostic Pathology (DDP), Gifu University - Department of Orthopedic Surgery, Gifu University - Department of Gastroenterology, Gifu University - Department of Tumor Pathology and Gifu University - Department of Tumor Pathology