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. 2017 Nov 14;14(11):1388. doi: 10.3390/ijerph14111388

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© 2017 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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Spatial distribution of the induced EF in different layers of the head model. R meets the relationship of “R = 8.5-L”, indicating that R attenuates with the increase of L.