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. 2019 Apr 1;9(4):e028382. doi: 10.1136/bmjopen-2018-028382

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Distribution of agreements and disagreements for the different risk of bias items analysed; raw number and percentage of the total. For disagreements, distribution of the different discrepancies.