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Impact of the COVID-19 pandemic on opioid overdose and other adverse events in the USA and Canada: a systematic review

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  • Contributors Contributorship statement: (1) Conception and design: SS, MCB; (2) Administrative support: MCB, CMB, MJE, JFW; (3) Provision of study materials or patients: SS, YA, MCB; (4) Collection and assembly of data: SS, YA, MCB; (5) Data analysis and interpretation: SS, YA, MCB; (6) Manuscript writing: All authors and (7) Final approval of manuscript: all authors(VIII) Overall guarantor: SS.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Commissioned; internally peer reviewed.

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