Are needle and syringe programmes associated with a reduction in HIV transmission among people who inject drugs: a systematic review and meta-analysis.
Aspinall EJ, Nambiar D, Goldberg DJ, Hickman M, Weir A, Van Velzen E, Palmateer N, Doyle JS, Hellard ME, Hutchinson SJ
Eradication of hepatitis C infection: the importance of targeting people who inject drugs.
Hellard M, Doyle JS, Sacks-Davis R, Thompson AJ, McBryde E