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In 2022, e-cigarettes were the most commonly used tobacco product among Hispanic American middle and high school students (8.8%), followed by cigarettes (1.8%) and cigars (1.7%)

In addition, the proposed Regulations would set out expressions that may be used on the product or package to indicate when a vaping product is without nicotine

*Correspondence: Ying Shen [email protected] Yuan [email protected] This article was submitted to Addictive Disorders, a section of the journal Frontiers in Psychiatry These authors have contributed equally to this work and share first authorship 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

Forty eight hours prior to exposures, 225 mL of test sediment was added to 400 mL acid-washed, glass beakers (4 cm depth)