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) LIU SS,Effect of postoperative analgesia on major postoperative complications : a systematic update of the evidence,Anesth Analg,,,2007,104,,689-702,https://cir.nii.ac.jp/crid/1572543025919251968,