. 2019 Mar 29;10:135. doi: 10.3389/fpsyt.2019.00135
Copyright © 2019 Jiang, Guo, Xing, He, Peng, Du, McClure and Mu.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Figure 2.
The assessment of bias risk in the 9 studies included in the quantitative synthesis.