Figure 1
Selection of a surgical cohort of opioid-naïve mothers (aged 15 to 64 years) and their opioid-naïve children (aged 1 to 24 years), Ontario, Canada, 2013 to 2017

Figure 1 Selection of a surgical cohort of opioid-naïve mothers (aged 15 to 64 years) and their opioid-naïve children (aged 1 to 24 years), Ontario, Canada, 2013 to 2017

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