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. 2015 Aug 11;3:292. Originally published 2014 Dec 1. [Version 2] doi: 10.12688/f1000research.5775.2

PMC4566288.1; 2014 Dec 1
PMC4566288.2; 2015 Aug 11

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Copyright: © 2015 Xu Q et al.

This is an open access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure S23. — The percentages were calculated by determining the proportions between the numbers of publications obtained with Criteria A and the numbers of publications obtained with Criteria A but without the exclusion of reviews.