. 2017 May 17;8(26):43332–43343. doi: 10.18632/oncotarget.17948
Copyright: © 2017 Ding et al.
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY), which permits unrestricted use and redistribution provided that the original author and source are credited.
Figure 1. Flow chart for selection of eligible studies.
