1. From the Department of Surgery, Niigata Cancer Center Hospital, Niigata; Department of Surgery, Cancer Institute Hospital; Department of Surgery, Tokyo Komagome Metropolitan Hospital; Department of Surgery, National Cancer Center Hospital, Central; Department of Surgery, National Cancer Center, Research Institute, Tokyo; Department of Surgery, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka; Department of Surgery, National Cancer Center Hospital, East, Tokyo; Department of Surgery,...