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. 2016 Jul 5;17(1):63. doi: 10.1186/s10194-016-0651-8

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© The Author(s). 2016

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.

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Fig. 3 — A Forest plots of relative risk (RR) for proportion of respondents comparing BTX A with placebo. M-H: Mantel-Haenzel, CI: confidence interval. B Forest plots of mean difference in VAS score comparing BTX A with placebo at the end of follow up (A), 1 month (B), 2 month (C), and 3 month (D). VAS: Visual analogue scale, MD: Mean difference, M-H: Mantel-Haenzel, CI: confidence interval. C Forest plots of mean difference in number of paroxysm comparing BTX A with placebo. MD: Mean difference, M-H: Mantel-Haenzel, CI: confidence interval