Aging and the health-care system: economic and structural issues.
D000368:Aged; D005382:Financing, Personal; D005102:Health Expenditures / Q000639:trends*; D006291:Health Policy / Q000191:economics*; D006299:Health Services for the Aged / Q000191:economics*; D006801:Humans; D008484:Medicaid; D006278:Medicare; D011157:Population Dynamics; D014481:United States