Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ANG DS,Serial bedside B-type natriuretic peptide strongly predicts prognosis in acute coronary syndrome independent of echocardiographic abnormalities,Am Heart J,,,2009,158,,133-140,https://cir.nii.ac.jp/crid/1572824500634063104,