Columbia subject headings:
Medical instruments and apparatus--Cost effectiveness.
Medical technology--Cost effectiveness.
Respiratory therapy--Washington (D.C.)--Cost effectiveness.
Harvard subject headings:
Medical instruments and apparatus--Cost effectiveness.
Medical technology--Cost effectiveness.
Respiratory therapy--Washington (D.C.)--Cost effectiveness.
Princeton subject headings:
Medical instruments and apparatus--Cost effectiveness.
Medical technology--Cost effectiveness.
Respiratory therapy--Washington (D.C.)--Cost effectiveness.