. 2016 Feb 4;2016:4370834. doi: 10.1155/2016/4370834
Copyright © 2016 Pattraporn Tajarernmuang 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.
The flow chart of the study selection.