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. 2016 Sep 15;8(9):695–706. doi: 10.4251/wjgo.v8.i9.695

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©The Author(s) 2016. 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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Comparison of overall survival and disease-free survival between the groups by Kaplan–Meier curves. The median DFS duration in group II was better than in group I (P = 0.01). DFS: Disease-free survival; OS: Overall survival.