Columbia subject headings:
Diffusion of innovations--United States.
Medical innovations--United States.
Medical instruments and apparatus--United States.
Medical policy--United States.
Harvard subject headings:
Diffusion of innovations--United States.
Medical innovations--United States.
Medical instruments and apparatus--United States.
Medical policy--United States
Princeton subject headings:
Diffusion of innovations--United States.
Medical innovations--United States.
Medical instruments and apparatus--United States.
Medical policy--United States.