Columbia subject headings:
Chronically ill--United States--Economic conditions.
Chronically ill--United States--Social conditions.
People with disabilities--United States--Economic conditions.
People with disabilities--United States--Social conditions.
Poor--Diseases--United States.
Poor--Medical care--United States.
Harvard subject headings:
Chronically ill--United States--Economic conditions.
Chronically ill--United States--Social conditions.
People with disabilities--United States--Economic conditions.
People with disabilities--United States--Social conditions.
Poor--Diseases--United States.
Poor--Medical care--United States
Princeton subject headings:
Chronically ill--United States--Economic conditions.
People with disabilities--United States--Economic conditions.
Poor--Diseases--United States.
Poor--Medical care--United States.