Columbia subject headings:
Harvard subject headings:
Managed care plans (Medical care)--Government policy--United States.
Medicare+Choice Program (U.S.)
Medicare.
MedicareChoice Program (U.S.)
Older people--Medical care--Government policy--United States.
Older people--Medical care--United States.
Princeton subject headings:
Managed care plans (Medical care)--Government policy--United States.
Medicare+Choice Program (U.S.)
Older people--Medical care--Government policy--United States.