http://jurban.oxfordjournals.org/cgi/content/abstract/82/2/285
Patricia A. Janssen et al.
Journal of urban health: bulletin of the New York Academy of Medicine. Vol 82 (2): pp. 285-295
"Acupuncture can be a useful tool in reducing intravenous drug use in Vancouver's Downtown Eastside, home to an estimated 4,000 addicts, a new study shows." [Links to abstract]