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Content analysis of age verification, purchase and delivery methods of internet e-cigarette vendors, 2013 and 2014
  1. Rebecca S Williams1,2,
  2. Jason Derrick1,
  3. Aliza Kate Liebman3,
  4. Kevin LaFleur1,
  5. Kurt M Ribisl1,4
  1. 1 Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
  2. 2 Center for Health Promotion and Disease Prevention, University of North Carolina, Chapel Hill, North Carolina, USA
  3. 3 Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
  4. 4 Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
  1. Correspondence to Dr Rebecca S Williams, University of North Carolina, CB 7424, Chapel Hill, NC 27599, USA; rebeccawilliams{at}unc.edu

Footnotes

  • Contributors RSW had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.

    Study concept and design: RSW, KMR.

    Acquisition, analysis or interpretation of data: All authors.

    Drafting of the manuscript: RSW, JD, AKL, KMR.

    Critical revision of the manuscript for important intellectual content: All authors.

    Statistical analysis: JD.

    Obtained funding: RSW, KMR.

    Administrative, technical or material support: RSW and JD.

    Study supervision: RSW.

  • Funding This study was funded by grant 5R01CA169189-02 from the National Cancer Institute.

  • Competing interests KMR has served as an expert consultant in litigation against tobacco companies.

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

  • Data sharing statement There are additional unpublished data from this study, but they are not publicly available, and are intended for use in further publications by the Internet Tobacco Vendors Study team.

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Footnotes

  • Contributors RSW had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.

    Study concept and design: RSW, KMR.

    Acquisition, analysis or interpretation of data: All authors.

    Drafting of the manuscript: RSW, JD, AKL, KMR.

    Critical revision of the manuscript for important intellectual content: All authors.

    Statistical analysis: JD.

    Obtained funding: RSW, KMR.

    Administrative, technical or material support: RSW and JD.

    Study supervision: RSW.

  • Funding This study was funded by grant 5R01CA169189-02 from the National Cancer Institute.

  • Competing interests KMR has served as an expert consultant in litigation against tobacco companies.

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

  • Data sharing statement There are additional unpublished data from this study, but they are not publicly available, and are intended for use in further publications by the Internet Tobacco Vendors Study team.

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