Assertion: trial's patient | /r/HasProperty | randomized to placebo
Facets:
Source sentences:
text: Patients were randomized to drug therapy or placebo if they met these criteria: They had a myocardial infarction occurring six days to two years prior to the onset of the study, and they had asymptomatic ventricular premature beats, detected by Holter monitor, which could be suppressed by either encainide, flecainide, or moracizine in an open-label design.