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) STEIN HJ,Early esophageal cancer : pattern of lymphatic spread and prognostic factors for long-term survival after surgical resection,Ann Surg,,,2005,242,,566-573,https://cir.nii.ac.jp/crid/1570291225106210432,