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. 2018 Mar 20;17:1533033818764498. doi: 10.1177/1533033818764498

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© The Author(s) 2018

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 4. — Two-needle configuration. Electric field map in V/cm for nonlinear model and case 2 considering: (A) d = 1 cm, V = 1000 V and (B) d = 2 cm, V = 2000 V and considering constant conductivity: (C) d = 1 cm, V = 1000 V and (D) d = 2 cm, V = 2000 V. Circles represent needle positions and the arrow evidences the 400 V/cm electric field level.