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| *Acknowledgement: We confirm that signatories report no conflicts with respect to FCTC Article 5.3 and no financial conflicts of interest with respect to tobacco or e-cigarette companies under the International Committee of Medical Journal Editors (ICJME) reporting standard. | | *Acknowledgement: We confirm that signatories report no conflicts with respect to FCTC Article 5.3 and no financial conflicts of interest with respect to tobacco or e-cigarette companies under the International Committee of Medical Journal Editors (ICJME) reporting standard. |
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| | ===2020 [https://pubmed.ncbi.nlm.nih.gov/33086157/ A comparison of product dependence among cigarette only, ENDS only, and dual users: Findings from Wave 3 (2015-2016) of the PATH study]=== |
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| ===2019: [https://pubmed.ncbi.nlm.nih.gov/31278802/ 2019 Perceived relative harm of using e-cigarettes predicts future product switching among US adult cigarette and e-cigarette dual users]=== | | ===2019: [https://pubmed.ncbi.nlm.nih.gov/31278802/ 2019 Perceived relative harm of using e-cigarettes predicts future product switching among US adult cigarette and e-cigarette dual users]=== |