Columbia subject headings:
Drug abuse--Treatment--United States--Statistics.
Drug abuse--United States--Statistics.
Substance abuse--Treatment--United States--Statistics.
Substance abuse--United States--Statistics.
Harvard subject headings:
Drug abuse--Treatment--United States--Statistics.
Drug abuse--United States--Statistics
Substance abuse--Treatment--United States--Statistics.
Substance abuse--United States--Statistics.
Princeton subject headings:
Drug abuse--Treatment--United States--Statistics.
Drug abuse--United States--Statistics.
Statistics.
Substance abuse--Treatment--United States--Statistics.
Substance abuse--United States--Statistics.