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. 2019 Jan 31;16:20. doi: 10.1186/s12984-019-0481-4

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Algorithm diagram with stop criteria for tele-monitored tDCS. Modified version from Kasschau et al. with authors’ permission. This protocol included user and/or caregiver capability to participate in tDCS, check list of procedures for safe placement of electrodes and head strap, dose control, monitoring of compliance and adverse events, and clear guidelines for discontinuation of sessions and/or study participation. Note various stop criteria determining when a subject is no longer able to safely participate in the study