Looking inside the black box : a theory-based process evaluation alongside a randomised controlled trial of printed educational materials (the Ontario printed educational message, OPEM) to improve referral and prescribing practices in primary care in Ontario, Canada

Grimshaw, J.M., Zwarenstein, M., Tetroe, J.M., Godin, G., Graham, I.D., Lemyre, L., Eccles, M.P., Johnston, M., Francis, J.J., Hux, J., O'Rourke, K., Legare, F., and Presseau, J. (2007). Looking inside the black box : a theory-based process evaluation alongside a randomised controlled trial of printed educational materials (the Ontario printed educational message, OPEM) to improve referral and prescribing practices in primary care in Ontario, Canada. Implementation Science [Online] 2(38). Available from: http://www.implementationscience.com/content/2/1/38 [Accessed 8 February 2008].