Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) GILBERT EM,"Long-term beta-blocker vasodilator therapy improves cardiac function in idiopathic dilated cardiomyopathy : A double-blind, randomized study of bucindolol versus placebo",Am J Med,,,1990,88,,223-229,https://cir.nii.ac.jp/crid/1570854174849090688,