. 2014 May 26;2014:489536. doi: 10.1155/2014/489536
Copyright © 2014 Ramin Sadeghi 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.
PRISMA flowchart of the study.