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. 2017 Jun 2;96(22):e6698. doi: 10.1097/MD.0000000000006698

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Copyright © 2017 the Author(s). Published by Wolters Kluwer Health, Inc.

This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial License 4.0 (CCBY-NC), where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The work cannot be used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc/4.0

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Table 1.

Characteristics of studies included in the network meta-analysis.

3.1.