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. 2013 Sep 20;7:396–419. doi: 10.2174/1874325001307010396

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© Gross et al.; Licensee Bentham Open.

This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

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Table 4.

GRADE Assessment of Included Studies

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