title: Beta receptor blocking agents in the secondary prevention of coronary heart disease.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000009:adverse effects / Q000627:therapeutic use*; D000368:Aged; D002986:Clinical Trials as Topic; D003327:Coronary Disease / Q000401:mortality / Q000517:prevention & control*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000401:mortality / Q000517:prevention & control; D011897:Random Allocation; D012107:Research Design
chemical_list: D000319:Adrenergic beta-Antagonists