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. 2020 Feb 15;12(2):182–194. doi: 10.4251/wjgo.v12.i2.182

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©The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.

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The treatment efficacy was consistently similar in both groups across the majority of subgroups. A: Forest plots of hazard ratio for overall survival; B: Progression-free survival according to subgroups.