title: Prognosis in severe angina pectoris: medical versus surgical therapy.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000787:Angina Pectoris / Q000150:complications / Q000188:drug therapy / Q000401:mortality / Q000601:surgery / Q000628:therapy*; D004338:Drug Combinations; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007548:Isosorbide Dinitrate / Q000008:administration & dosage / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology / Q000401:mortality; D009518:New York; D010414:Pennsylvania; D011379:Prognosis; D011433:Propranolol / Q000008:administration & dosage / Q000627:therapeutic use*; D011446:Prospective Studies
chemical_list: D004338:Drug Combinations; D011433:Propranolol; D007548:Isosorbide Dinitrate