. 2016 Dec 28;2016:6706901. doi: 10.1155/2016/6706901
Copyright © 2016 Chao-qin Gou et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Flowchart of the trials selection process.