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. 2015 May 29;94(21):e775. doi: 10.1097/MD.0000000000000775

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Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.

This is an open access article distributed under the Creative Commons Attribution-NonCommercial License, where it is permissible to download, share and reproduce the work in any medium, provided it is properly cited. The work cannot be used commercially. http://creativecommons.org/licenses/by-nc/4.0

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TABLE 1.

Characteristics of Included Studies

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