Survival after age 80.
Preston
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Elo
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D000368:Aged; D000369:Aged, 80 and over / Q000706:statistics & numerical data*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008017:Life Expectancy; D008297:Male; D015996:Survival Rate; D014481:United States / Q000453:epidemiology