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. 2019 Aug 16;9:730. doi: 10.3389/fonc.2019.00730

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Copyright © 2019 Wang, Sun, Wang, Liu, Li, Chen, Wu, Tang, Zhou, Zhang, Xiao, Huang, Wang and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Meta-analysis on safety. (A–F) shown the comparisons and meta-analysis on safety between CHM-WM group and WM group. The I2 statistic described the percentage of total variation across studies that was due to heterogeneity rather than chance. CI indicated the confidence interval. Dichotomous data were presented as pooled Risk Ratio (RR) with 95% confidence intervals (95% CIs).