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) Junichi Sakamoto and Koji Oba,Geographic difference in advanced gastric cancer prevalence and chemotherapy treatment results : could it really be an independent prognostic factor?,Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association,14363291,Tokyo : Springer Japan,2012,15,3,232-234,https://cir.nii.ac.jp/crid/1520010379795976832,