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Referee report. For: A randomised trial of the effects on recruitment and retention of including a wet-ink signature and photograph in the patient invitation letter for a clinical trial: results from a Study Within a Trial (SWAT 3 and SWAT 53) [version... (2022)

Abstract

No abstract provided

Bibliographic Information

Digital Object Identifier: http://dx.doi.org/10.5256/f1000research.79197.r151028

Publication URI: https://f1000research.com/articles/11-174/v1#referee-response-151028

Type: Other