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BMJ Publishing Group, BMJ Open, 2(4), p. e003821, 2014

DOI: 10.1136/bmjopen-2013-003821

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Strategies to improve retention in randomised trials: a Cochrane systematic review and meta-analysis.

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

To quantify the effect of strategies to improve retention in randomised trials.