E-mail invitations to general practitioners were as effective as postal invitations and were more efficient

Treweek, 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.2011.11.010