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Consequences of clean indoor air exemptions in Oregon: the hookah story

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  • Contributors JEM led the writing of this letter, and DSM conducted the analyses. All authors contributed to the conceptualisation of this letter, helped interpret findings and reviewed drafts of the letter. KEG is the guarantor of this paper.

  • Funding This work was supported by the Oregon Public Health Division Tobacco Prevention and Education Program.

  • Competing interests None.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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