Columbia subject headings:
Health services administration--History--20th century.
Medical innovations--History--20th century.
Medical policy--History--20th century.
Harvard subject headings:
Health services administration--History--20th century.
Medical policy--History--20th century.
Medical technology--History--20th century.
Princeton subject headings:
Health services administration--History--20th century.
Medical innovations--History--20th century.
Medical policy--History--20th century.