著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Shohei Eto and Kozo Yoshikawa and Masaaki Nishi and Jun Higashijima and Takuya Tokunaga and Toshihiro Nakao and Hideya Kashihara and Chie Takasu and Takashi Iwata and Mitsuo Shimada,Programmed cell death protein 1 expression is an independent prognostic factor in gastric cancer after curative resection,Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association,14363291,Tokyo : Springer Japan,2016,19,2,466-471,https://cir.nii.ac.jp/crid/1523951029780023680,