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) NOMURA A. M. Y.,Relation between Helicobacter pylori cagA status and risk of peptic ulcer disease,Am. J. Epidemiol.,,,2002,155,,1054-1059,https://cir.nii.ac.jp/crid/1572261550564224000,