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. 2012 Oct 15;12(10):13813–13828. doi: 10.3390/s121013813

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© 2012 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 license (http://creativecommons.org/licenses/by/3.0/).

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Figure 3. — (a) Prototype of wireless respiration sensor with two, self-adhesive, disposable electrodes, a lithium coin battery, and a ceramic chip antenna. (b) Raw signal from the respiration sensor with ECG R-peaks modulated by breathing.