Public financing of Medicare.
D000368:Aged; D003361:Cost Allocation; D005380:Financing, Government / Q000639:trends; D006297:Health Services Accessibility; D006299:Health Services for the Aged / Q000191:economics*; D006801:Humans; D006278:Medicare / Q000191:economics* / Q000639:trends; D011787:Quality of Health Care; D014481:United States