A population-based cohort study in Ontario, Canada
There has been growing concern over the increased prescribing of opioids as opioid-related deaths across North America have climbed over the last 20 years. More recently, the use of nonprescribed (i.e. diverted or illegal) opioids is thought to have become a major contributor to opioid-related deaths.
This study describes the contribution of prescribed and nonprescribed opioids to all opioid-related deaths in Ontario.
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