Columbia subject headings:
Diseases--Reporting--United States.
Hospital records--United States.
Nosocomial infections--Reporting--United States.
Harvard subject headings:
Diseases--Reporting--United States.
Hospital records--United States.
Nosocomial infections--Reporting--United States.
Princeton subject headings:
Diseases--Reporting--United States.
Hospital records--United States.
Nosocomial infections--Reporting--United States.