Identifying additional studies for a systematic review of retention strategies in randomised controlled trials: making contact with trials units and trial methodologists
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Published Online: 2017-08-22
Published Print: 2017-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Tierney, Jayne F.
Funding for this research was provided by:
Medical Research Council (PHSRN 30)