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) CHEN C,Noninvasive estimation of the instantaneous first derivative of left ventricular pressure using continuous-wave Doppler echocardiography,Circulation,,,1991,83,,2101-2110,https://cir.nii.ac.jp/crid/1572261550804401408,