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. 2017 Apr 3;7:553. doi: 10.1038/s41598-017-00668-w

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Representation of the system used to generate EMF. (A) The principle block diagram of EMF system. The device consists of four main parts: Labview software, multifunction data acquisition device, power amplifier and Helmholtz coils. (B) The simulated effect diagram of the system. (C) The physical photo of EMF system in the experiment.