Oliver, Sandy and Bagnall, Anne-Marie and Thomas, James and Shepherd, Jonathan and Sowden, Amanda and White, Ian and Dinnes, Jacqueline and Rees, Rebecca and Colquitt, Jill and Garrett, Zoe and Oliver, Kathryn
Randomised control trials for policy interventions: a review of reviews and meta-regression.
Health Technology Assessment Monographs, 14 (16).
PDF (Randomised control trials for policy interventions: a review of reviews and meta-regression)
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