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. 2018 Jan 29;8(1):11. doi: 10.3390/bios8010011

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© 2018 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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Examples of wearable EFCs for the detection of lactate. (a) EFC tattoo sensor for lactate, adapted from [54] with permission from Wiley & Sons; (b) EFC contact lens sensor from [11] with permission from Elsevier.