Columbia subject headings:
Health insurance--United States.
Medical care--United States.
Medical economics--United States.
Harvard subject headings:
Chronic diseases--United States.
Health care reform--United States
Health insurance--United States
Medical care--United States
Medical economics--United States.
Primary health care--United States.
Princeton subject headings:
Health insurance--United States.
Medical care--United States.
Medical economics--United States.