. 2016 Jul 31;2016:3549878. doi: 10.1155/2016/3549878
Copyright © 2016 S.-H. Lee and S. M. Lim.
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.
Flow chart of the trial selection process.