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Contributors MJL, MJ and CA conceived the paper. MJL and MJ led the writing and editing of the paper. CA contributed to editing of the paper.
Funding This work was supported in part by NCI and FDA Centre for Tobacco Products (CTP) under U54CA229973.
Disclaimer The content is solely the responsibility of the authors and does not necessarily represent the official views of NCI or FDA.
Competing interests None declared.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; externally peer reviewed.
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