. 2019 Jul-Sep;12(3):214–221. doi: 10.5935/1984-0063.20190082
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivative License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited and the work is not changed in any way.
Figure 1.
Flowchart of study selection. n=number.