Answers are grounded in this paper and cite their sources.
A. R. Moss, J. A. Hahn; Invited Commentary: Needle Exchange—No Help for Hepatitis?, American Journal of Epidemiology, Volume 149, Issue 3, 1 February 1999, Page
No takes yet. Share an insight, caveat, or question.
Moss et al. (1999) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: