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Figure 1 Graph showing on a logarithmic scale the odds ratios and 95% confidence intervals for out-of-hospital ventricular fibrillation associated with preinfarction angina in various subgroups. *Hypertension, hypercholesterolemia, diabetes mellitus, current smoking and family history. IRA = infarct-related coronary artery; LCA = left coronary artery; PA = preinfarction angina; RCA = right coronary artery; TIMI = Thrombolysis In Myocardial Infarction; VF = ventricular fibrillation.
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