Columbia subject headings:
Competition--United States.
Medical economics--United States.
Medical laws and legislation--United States.
Medical policy--United States.
Harvard subject headings:
Competition--United States
Medical economics--United States.
Medical laws and legislation--United States.
Medical policy--United States
Princeton subject headings:
Competition--United States.
Medical economics--United States.
Medical laws and legislation--United States.
Medical policy--United States.