. 2014 Dec 12;9(12):e113731. doi: 10.1371/journal.pone.0113731
© 2014 Baeumler et al
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
Figure 1. Systematic Review Process Flowchart.
