. 2016 Mar 6;2016:4095852. doi: 10.1155/2016/4095852
Copyright © 2016 Sophie Seguin-Greenstein 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 flow diagram of study selection.