The effect of using social pressure in cover letters to improve retention in a longitudinal health study: an embedded randomised controlled retention trial
Crossref DOI link: https://doi.org/10.1186/s13063-017-2090-5
Published Online: 2017-07-20
Published Print: 2017-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Cotterill, Sarah https://orcid.org/0000-0001-5136-390X
Howells, Kelly
Rhodes, Sarah
Bower, Peter
Funding for this research was provided by:
Health Services and Delivery Research Programme (12/130/33)
