title: Effect of metoprolol on chest pain in acute myocardial infarction.
mesh_terms: D003326:Coronary Circulation / Q000187:drug effects; D006801:Humans; D008790:Metoprolol / Q000494:pharmacology*; D009203:Myocardial Infarction / Q000503:physiopathology*
chemical_list: D008790:Metoprolol