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. 2015 Feb 19;(2):1–115. doi: 10.1002/14651858.CD008152.pub4

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Copyright © 2014 The Authors. Cochrane Database of Systematic Reviews published by John Wiley & Sons, Ltd. on behalf of The Cochrane Collaboration.

This is an open access article under the terms of the Creative Commons Attribution-Non-Commercial-No-Derivatives Licence, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Chen 1993b

Methods

Participants

Interventions

Outcomes

Notes	Study not yet located