title: Randomised controlled trials for policy interventions: a review of reviews and meta-regression.
authors.affiliation: Social Science Research Unit, Institute of Education, University of London, UK.
authors.forename: S
authors.initials: S
authors.lastname: Oliver
authors.forename: A M
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authors.lastname: Bagnall
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authors.lastname: Thomas
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authors.initials: J
authors.lastname: Shepherd
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authors.lastname: Sowden
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authors.lastname: White
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authors.lastname: Dinnes
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authors.lastname: Colquitt
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authors.lastname: Oliver
authors.forename: Z
authors.initials: Z
authors.lastname: Garrett