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. 2019 May 29;9:448. doi: 10.3389/fonc.2019.00448

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Copyright © 2019 Xia, Wang, Meng, Su, Shen, Wang, He, Wen, Zhang and Xu.

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 map of clinical characters in univariate analysis. The coordinate of diamond represents the odds ratio. Univariate Cox regression analysis was performed. Subgroup with a value of p < 0.05 was considered statistically significant.