Columbia subject headings:
Analgesics--Law and legislation--United States.
Assisted suicide--Law and legislation--United States.
Drugs--Law and legislation--United States.
Pain--Law and legislation--United States.
Terminal care--Law and legislation--United States.
Harvard subject headings:
Analgesics--Law and legislation--United States.
Assisted suicide--Law and legislation--United States
Drugs--Law and legislation--United States.
Pain--Law and legislation--United States.
Terminal care--Law and legislation--United States.
Princeton subject headings:
Analgesics--Law and legislation--United States.
Assisted suicide--Law and legislation--United States.
Drugs--Law and legislation--United States.
Pain--Law and legislation--United States.
Terminal care--Law and legislation--United States.