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. 2018 Sep 11;9:2077. doi: 10.3389/fimmu.2018.02077

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Copyright © 2018 Li, Ma, Wang, Jiang, Chen, Wu, Liu, Zeng, Zhou and Yuan.

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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Begg's funnel plot for publication bias tests in (A) liver cirrhosis, (B) portal vein invasion and (C) BCLC stage. Sensitivity analysis in (D) liver cirrhosis, (E) portal vein invasion and (F) BCLC stage.