. 2015 Oct 12;4(10):e002137. doi: 10.1161/JAHA.115.002137
© 2015 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell.
This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Figure 2.
Risk of bias assessment for studies included in the meta‐analysis.