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Cumulative event free survival from cardiac death or readmission to hospital with congestive heart failure in (A) patients with acute myocardial infarction with mitral deceleration time (DT) ⩽ 140 ms and > 140 ms, (B) patients with ejection fraction (EF) ⩽ 40% and > 40%, and (C) patients with SD of all NN intervals ⩾ 92 and < 92.
