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. 2019 Oct 10;19(20):4376. doi: 10.3390/s19204376

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) Wristband carrying the SnO₂ sensor and the electronics associated to it. (B) Comparison of blood (BAC), breath (BrAC) and transdermal (TAC) alcohol concentration for a maximum BAC of 0.5 g L⁻¹. (C) Comparison of BAC, BrAC, and TAC for a maximum BAC of 0.5 g L⁻¹. Reproduced from [94] with permission. © 2018 Elsevier B.V. All rights reserved.