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) Shiho Yoshitaka and Moritoki Egi and Hiroshi Morimatsu and Tomoyuki Kanazawa and Yuichiro Toda and Kiyoshi Morita,Perioperative plasma melatonin concentration in postoperative critically ill patients: Its association with delirium,Journal of Critical Care,0883-9441,Elsevier BV,2013-06,28,3,236-242,https://cir.nii.ac.jp/crid/1360574094065955456,https://doi.org/10.1016/j.jcrc.2012.11.004