. 2016 Nov 7;15:636–651. doi: 10.17179/excli2016-619
Copyright © 2016 Kandhare et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (http://creativecommons.org/licenses/by/4.0/) You are free to copy, distribute and transmit the work, provided the original author and source are credited.
Figure 3. Publication bias analysis by using funnel plot.
