Columbia subject headings:
Drugs--Prices--United States.
Medicare.
Older people--Pharmaceutical assistance--United States.
Pharmaceutical services insurance--United States.
Harvard subject headings:
Drugs--Prices--United States.
Medicare.
Older people--Pharmaceutical assistance--United States.
Older people--United States--Pharmaceutical assistance.
Pharmaceutical services insurance--United States.
Princeton subject headings:
Drugs--Prices--United States.
Medicare.
Older people--Pharmaceutical assistance--United States.
Pharmaceutical services insurance--United States.