Columbia subject headings:
Medically uninsured persons--Medical care--United States--Finance.
Poor--Medical care--United States--Finance.
Harvard subject headings:
Medically uninsured persons--Medical care--United States--Finance.
Poor--Medical care--United States--Finance.
Princeton subject headings:
Medically uninsured persons--Medical care--United States--Finance.
Poor--Medical care--United States--Finance.