title: At the heart of a drug: beta blocker. The Norwegian Multicentre Study Group.
mesh_terms: D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D006801:Humans; D008875:Middle Aged; D009203:Myocardial Infarction / Q000188:drug therapy* / Q000401:mortality; D011412:Propanolamines / Q000627:therapeutic use*; D013999:Timolol / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D011412:Propanolamines; D013999:Timolol