Columbia subject headings:
Discounts for older people--United States.
Insurance, Pharmaceutical services--United States.
Medicare.
Older people--Pharmaceutical assistance--United States.
Prescription pricing--United States.
Harvard subject headings:
Discounts for older people--United States.
Medicare.
Older people--Pharmaceutical assistance--United States.
Pharmaceutical services insurance--United States.
Prescription pricing--United States
Princeton subject headings:
Discounts for older people--United States.
Medicare.
Older people--Pharmaceutical assistance--United States.
Pharmaceutical services insurance--United States.
Prescription pricing--United States.