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Ho, Joel, Kora DeBeck, M-J Milloy, Huiru Dong, Evan Wood, Thomas Kerr, και Kanna Hayashi. "Increasing Availability of Illicit and Prescription Opioids Among People Who Inject Drugs in a Canadian Setting, 2010–2014." Am J Drug Alcohol Abuse 2017.

Ho, Joel, et al. "Increasing Availability of Illicit and Prescription Opioids Among People Who Inject Drugs in a Canadian Setting, 2010–2014." Am J Drug Alcohol Abuse 2017.