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'I used to smoke 20 cigarettes per day

and (5) Any other active ingredient that constitutes at least 1.0% of the batch used in the product

*Correspondence: Miao Liu, [email protected] Ai, [email protected] These authors have contributed equally to this work This article was submitted to Oxidant Physiology, a section of the journal Frontiers in Physiology Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers

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