Acute myocardial infarction in Medicare patients, 1987-1990.
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D000368:Aged; D000369:Aged, 80 and over; D006328:Cardiac Catheterization / Q000706:statistics & numerical data*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D006278:Medicare / Q000706:statistics & numerical data*; D009203:Myocardial Infarction / Q000401:mortality*; D018579:Patient Selection; D011379:Prognosis; D012720:Severity of Illness Index; D013997:Time Factors; D014481:United States / Q000453:epidemiology