Propranolol in threatened myocardial infarction.
D002986:Clinical Trials as Topic; D006801:Humans; D009203:Myocardial Infarction / Q000517:prevention & control*; D011433:Propranolol / Q000627:therapeutic use*; D011446:Prospective Studies; D011897:Random Allocation
D011433:Propranolol