Strategies to improve retention in randomised trials: a Cochrane systematic review and meta-analysis
Crossref DOI link: https://doi.org/10.1136/bmjopen-2013-003821
Published Online: 2014-02-04
Published Print: 2014-02
Update policy: https://doi.org/10.1136/crossmarkpolicy
Brueton, V C
Tierney, J F
Stenning, S
Meredith, S
Harding, S
Nazareth, I
Rait, G