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. 2021 Oct 27;9:748935. doi: 10.3389/fchem.2021.748935

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Copyright © 2021 Lu, Li, Duffy, Dittmar, Durocher, Panawennage, Delaney-Baldwin and Spink.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The Ratio of VEA to THCs in illicit vaping fluids. In the vaping samples found to contain VEA, the ratios of VEA to THCs (Δ⁹-THC + Δ⁸-THC) by mass in the individual samples are shown.