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Using postal randomization to replace telephone randomization had no significant effect on recruitment of patients.
Brealey SD, Atwell C, Bryan S, Coulton S, Cox H, Cross B, Fylan F, Garratt A, Gilbert FJ, Gillan MG, Hendry M, Hood K, Houston H, King D, Morton V, Orchard J, Robling M, Russell IT, Torgerson D, Wadsworth V, Wilkinson C. Brealey SD, et al. J Clin Epidemiol. 2007 Oct;60(10):1046-51. doi: 10.1016/j.jclinepi.2007.04.003. Epub 2007 Aug 13. J Clin Epidemiol. 2007. PMID: 17884600
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