Columbia subject headings:
Health facilities--United States--Safety measures.
Medical care--United States--Quality control.
Terrorism--Health aspects--United States.
Harvard subject headings:
Health facilities--United States--Safety measures.
Medical care--United States--Quality control
Terrorism--Health aspects--United States.
Princeton subject headings:
Health facilities--United States--Safety measures.
Medical care--United States--Quality control.
Terrorism--Health aspects--United States.