title: Letter: Long-term prophylaxis with beta-adrenoceptor blockade after myocardial infarction.
mesh_terms: D002986:Clinical Trials as Topic; D005500:Follow-Up Studies; D006801:Humans; D009203:Myocardial Infarction / Q000188:drug therapy*; D011217:Practolol / Q000627:therapeutic use*
chemical_list: D011217:Practolol