Needle exchange programs.
Battershill
J H
JH
D004866:Equipment Contamination / Q000517:prevention & control*; D006801:Humans; D007239:Infections / Q000635:transmission*; D018671:Needle-Exchange Programs; D009339:Needles / Q000382:microbiology*; D013594:Syringes / Q000382:microbiology*