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Grey literature in systematic reviews: a cross-sectional study of the contribution of non-English reports, unpublished studies and dissertations to the results of meta-analyses in child-relevant reviews

Crossref DOI link: https://doi.org/10.1186/s12874-017-0347-z

Published Online: 2017-04-19

Published Print: 2017-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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