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Crocker, J., I. Ricci-Cabello, A. Parker, J. Hirst, A. Chant, S. Petit-Zeman, D. Evans, and S. Rees. Impact of Patient and Public Involvement on Enrolment and Retention in Clinical Trials: Systematic Review and Meta-analysis. BMJ Publishing Group, 2018.

Crocker, J., et al. Impact of Patient and Public Involvement on Enrolment and Retention in Clinical Trials: Systematic Review and Meta-analysis. BMJ Publishing Group, 2018.