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Conditional versus Non-Conditional Incentives to Maximise Return of Participant Completed Questionnaires in Clinical Trials: A Cluster Randomised Study Within a Trial
Cook J., Cook J., Bongard E., Heneghan C., Butler C.
DOI
10.21203/rs.3.rs-639815/v1
Type
Preprint
Publication Date
2021-01-01T00:00:00+00:00