. 2014 May 30;4:5126. doi: 10.1038/srep05126
Copyright © 2014, Macmillan Publishers Limited. All rights reserved
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. The images in this article are included in the article's Creative Commons license, unless indicated otherwise in the image credit; if the image is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the image. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
Figure 2. Forest plot for the effects of PBL on examination scores compared with LBL.
