Columbia subject headings:
Harvard subject headings:
Medical care--Europe, Northern--History--19th century.
Medical care--Europe, Northern--History--20th century.
Medical care--North America--History--19th century.
Medical care--North America--History--20th century.
Princeton subject headings:
Medical care--Europe, Northern--History--19th century.
Medical care--Europe, Northern--History--20th century.
Medical care--North America--History--19th century.
Medical care--North America--History--20th century.