Columbia subject headings:
Anesthesiology--Standards--United States.
Hospitals--Anesthesia services--United States--Safety measures.
Harvard subject headings:
Anesthesiology--Standards--United States.
Hospitals--Anesthesia services--United States--Safety measures.
Princeton subject headings:
Anesthesiology--Standards--United States.
Hospitals--Anesthesia services--United States--Safety measures.