Shan, Tikun
Zhang, Tiejun
Qian, Weiqiang
Ma, Lu
Li, Hao
You, Chao
Xie, Xiaoqi
Funding for this research was provided by:
1.3.5 project for disciplines of excellence, West China Hospital, Sichuan University (No. ZY2016102)
National Natural Science Foundation of China (No. 81501003)
Article History
Received: 4 December 2018
Revised: 2 January 2019
Accepted: 4 January 2019
First Online: 9 February 2019
Compliance with ethical standards
:
: I would like to declare on behalf of my co-authors that the work described was original research that has not been published previously, and not under the consideration for publication elsewhere, in whole or in part. In addition, no conflict of interest exists in our study. This article is a meta-analysis with all analyses based on previous published studies, thus no ethical approval and patient consent are required.