. 2016 May 13;95(19):e3607. doi: 10.1097/MD.0000000000003607
Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved.
This is an open access article distributed under the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0
FIGURE 1.
Study flowchart.