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) GRAY DT,Clinical outcomes and costs of transcatheter as compared with surgical closure of patent ductus arteriosus,N. Engl. J. Med.,,,1993,329,,1517-1523,https://cir.nii.ac.jp/crid/1573387451211803904,https://doi.org/10.1056/nejm199311183292101