Impact of patient and public involvement on enrolment and retention in clinical trials: systematic review and meta-analysis.
Joanna C CrockerIgnacio Ricci-CabelloAdwoa ParkerJennifer A HirstAlan ChantSophie Petit-ZemanDavid EvansSian ReesPublished in: BMJ (Clinical research ed.) (2018)
PROSPERO CRD42016043808.