Columbia subject headings:
Hospitals--Canada--Periodicals.
Hospitals--Periodicals.
Hospitals--United States--Periodicals.
Harvard subject headings:
Hospitals--Canada--Periodicals.
Hospitals--Periodicals
Hospitals--United States--Periodicals.
Princeton subject headings:
Hospitals--Canada--Periodicals.
Hospitals--Periodicals.
Hospitals--United States--Periodicals.
Hospitals--United States--Statistics--Periodicals.
Periodicals.