Columbia subject headings:
Harvard subject headings:
Health maintenance organizations--United States.
Managed care plans (Medical care)--United States.
Medicare+Choice Program (U.S.)
Medicare--Finance.
Medicare--Law and legislation.
United States. Balanced Budget Act of 1997.
Princeton subject headings:
Medicare+Choice Program (U.S.)
Medicare--Finance.
Medicare--Law and legislation.
United States. Balanced Budget Act of 1997