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) Akagi,Overexpression of PIK3CA is associated with lymph node metastasis in esophageal squamous cell carcinoma,International Journal of Oncology,1019-6439,Spandidos Publications,2009-02-09,34,3,767,https://cir.nii.ac.jp/crid/1361418519791363968,https://doi.org/10.3892/ijo_00000202