Medicine, health, and the geriatric transformation.
D000368:Aged; D002908:Chronic Disease; D006291:Health Policy; D006299:Health Services for the Aged / Q000639:trends*; D006801:Humans; D008017:Life Expectancy; D013677:Medical Laboratory Science / Q000639:trends*; D009017:Morbidity; D011157:Population Dynamics; D014481:United States