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Recruitment and retention strategies and the examination of attrition bias in a randomised controlled trial in children’s centres serving families in disadvantaged areas of England

Crossref DOI link: https://doi.org/10.1186/s13063-015-0578-4

Published Online: 2015-03-07

Published Print: 2015-12

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

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