Hazards in the evaluation of secondary prevention trials.
D000787:Angina Pectoris / Q000453:epidemiology / Q000517:prevention & control; D017023:Coronary Angiography; D003327:Coronary Disease / Q000453:epidemiology / Q000517:prevention & control*; D004562:Electrocardiography; D004812:Epidemiologic Methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D009203:Myocardial Infarction / Q000453:epidemiology / Q000517:prevention & control; D011379:Prognosis; D012306:Risk