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) Francesco Franceschi and Antonio Gasbarrini,Helicobacter pylori and extragastric diseases,Best Practice & Research Clinical Gastroenterology,1521-6918,Elsevier BV,2007-04,21,2,325-334,https://cir.nii.ac.jp/crid/1361418520242010752,https://doi.org/10.1016/j.bpg.2006.10.003