Nosocomial infections in intensive care units.
D001424:Bacterial Infections / Q000453:epidemiology*; D003428:Cross Infection / Q000453:epidemiology*; D004196:Disease Outbreaks / Q000453:epidemiology*; D004352:Drug Resistance, Microbial; D005860:Germany, West; D006801:Humans; D007362:Intensive Care Units; D011446:Prospective Studies; D013557:Switzerland; D014481:United States