Columbia subject headings:
Drug utilization--United States--Costs--Statistics.
Medicare--Statistics.
Prescription pricing--United States--Statistics.
Harvard subject headings:
Drug utilization--United States--Statistics.
Medicare.
National Medical Expenditure Survey (U.S.)
Pharmaceutical policy--United States
Prescription pricing--United States--Statistics.
Princeton subject headings:
Drug utilization--United States--Statistics.
Medicare.
Pharmaceutical policy--United States.
Prescription pricing--United States--Statistics.
Statistics.