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. 2023 Mar 5;14(3):603. doi: 10.3390/mi14030603

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© 2023 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 (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

(a) A comprehensive diagram of wearable healthcare monitoring systems (reprinted with permission from Ref. [119], Copyright 2018 Royal Society of Chemistry). (b) Diagram of a wireless intracranial pressure monitoring system based on a nanomaterial-enabled piezoresistive sensor (reprinted with permission from Ref. [120], Copyright 2022 Institute of Electrical and Electronics Engineers). (c) Diagram of a smart face mask that can wirelessly monitor the mask-wearing condition and the cough frequency (reprinted with permission from Ref. [121], Copyright 2022 American Chemical Society).