title: Beta-blocker therapy for heart failure: the evidence is in, now the work begins.
authors.forename: R M
authors.initials: RM
authors.lastname: Califf
authors.forename: C M
authors.initials: CM
authors.lastname: O'Connor
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D006333:Heart Failure / Q000188:drug therapy*; D006801:Humans; D008790:Metoprolol / Q000031:analogs & derivatives* / Q000627:therapeutic use
chemical_list: D000319:Adrenergic beta-Antagonists; D008790:Metoprolol