Letter: Spread of hepatitis in dialysis units.
D000391:Air Microbiology; D001769:Blood / Q000382:microbiology; D003428:Cross Infection / Q000209:etiology*; D004196:Disease Outbreaks; D006509:Hepatitis B / Q000209:etiology* / Q000382:microbiology; D006801:Humans; D008131:London; D006435:Renal Dialysis / Q000009:adverse effects* / Q000295:instrumentation