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. 2022 Mar 17;10:782068. doi: 10.3389/fpubh.2022.782068

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Copyright © 2022 Stefaniak, Ranpara, Virji and LeBouf.

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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Regional and total aerosol deposition in e-cigarette users and exhaled fraction by e-liquid (low-flow cascade impactor data). H, head region; TB, tracheobronchial region; P, pulmonary region; PG, propylene glycol; VG, vegetable glycerin.