. 2018 Jul 10;2018:7681039. doi: 10.1155/2018/7681039
Copyright © 2018 William Khalil El-Chaer 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.
Rationale of the selection of articles.