Early stopping of trials.
Langer
A
A
D002317:Cardiovascular Agents / Q000627:therapeutic use; D002986:Clinical Trials as Topic / Q000191:economics; D004110:Diltiazem / Q000627:therapeutic use; D004345:Drug Industry; D004992:Ethics, Medical; D006801:Humans; D009203:Myocardial Infarction / Q000188:drug therapy
D002317:Cardiovascular Agents; D004110:Diltiazem