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. 2020 Oct 23;10:543646. doi: 10.3389/fonc.2020.543646

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Copyright © 2020 Sun, Liang, Chen, Guo, Liu, Sun, Luo, Tang and Mai

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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Forest plot of the association between locoregional radiotherapy (LRRT) and overall survival by subgroup (A); palliative chemotherapy (PCT) cycles and overall survival by subgroup (B). Multivariate hazard ratios (HR) displayed are adjusted for the factors described in the methods section. Low and High refer to the lower and upper limit of the 95% confidence interval, respectively.