Columbia subject headings:
Assistance in emergencies--United States--Congresses.
Emergency medical services--Law and legislation--United States--Congresses.
Emergency medical services--United States--Congresses.
Harvard subject headings:
Assistance in emergencies--United States--Congresses.
Emergency medical services--Law and legislation--United States--Congresses.
Emergency medical services--United States--Congresses.
Princeton subject headings: