title: Letter: Postoperative myocardial infarction.
mesh_terms: D006801:Humans; D009203:Myocardial Infarction / Q000209:etiology* / Q000517:prevention & control; D011183:Postoperative Complications / Q000517:prevention & control; D011217:Practolol / Q000627:therapeutic use*; D012306:Risk
chemical_list: D011217:Practolol