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) ZOGHBI WA,"American Society of Echocardiography, Recommendations for evaluation of the severity of native valvular regurgitation with two-dimensional and Doppler echocardiography",J Am Soc Echocardiogr,,,2003,16,,777-802,https://cir.nii.ac.jp/crid/1573950400656637440,