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) H.J. Gerbershagen and J. Rothaug and C.J. Kalkman and W. Meissner,Determination of moderate-to-severe postoperative pain on the numeric rating scale: a cut-off point analysis applying four different methods,British Journal of Anaesthesia,0007-0912,Elsevier BV,2011-10,107,4,619-626,https://cir.nii.ac.jp/crid/1360011145673659648,https://doi.org/10.1093/bja/aer195