Treweek, ShaunBarnett, KarenMaclennan, GraemeBonetti, DebbieEccles, Martin PFrancis, Jillian JoyJones, ClairePitts, Nigel BRicketts, Ian WWeal, MarkSullivan, Frank2013-04-252013-04-252012-07Treweek, S, Barnett, K, Maclennan, G, Bonetti, D, Eccles, M P, Francis, J J, Jones, C, Pitts, N B, Ricketts, I W, Weal, M & Sullivan, F 2012, 'E-mail invitations to general practitioners were as effective as postal invitations and were more efficient', Journal of Clinical Epidemiology, vol. 65, no. 7, pp. 793-797. https://doi.org/10.1016/j.jclinepi.2011.11.010ORCID: /0000-0002-1039-5646/work/98038517ORCID: /0000-0002-7239-7241/work/186968388http://hdl.handle.net/2164/2807Copyright © 2012 Elsevier Inc. All rights reserved.563137engrecruitmentrandomized controlled trialse-mailpostalremindersprimary careR MedicineRE-mail invitations to general practitioners were as effective as postal invitations and were more efficientJournal article10.1016/j.jclinepi.2011.11.010657