Healthcare's future: the demographic perspective.
D000368:Aged; D003256:Community Participation / Q000639:trends*; D006293:Health Promotion / Q000639:trends*; D006801:Humans; D008019:Life Style; D008875:Middle Aged; D011157:Population Dynamics; D011315:Preventive Medicine / Q000639:trends; D012959:Socioeconomic Factors; D014481:United States