Prior notification of trial participants by newsletter increased response rates: a randomized controlled trial

Natasha Mitchell(University of York), David Torgerson(University of York), Catherine Hewitt(University of York), Eleanor Platt(University of York), Lee Shepstone(University of East Anglia), Elizabeth Lenaghan(University of East Anglia)
Journal of Clinical Epidemiology
August 15, 2012
Cited by 41


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