The "healthy elderly:" why do they do so well?
D000368:Aged / Q000523:psychology*; D000375:Aging; D002908:Chronic Disease / Q000628:therapy; D006262:Health; D006304:Health Status; D006801:Humans; D008019:Life Style; D008603:Mental Health; D012866:Skilled Nursing Facilities / Q000706:statistics & numerical data; D014481:United States