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Emergency Medicine Journal : EMJ|February 24, 2011
Inappropriate 999 calls: an online pilot surveyHelen M Kirkby, Lesley M RobertsBMC Medical Research Methodology|June 11, 2011
Using e-mail recruitment and an online questionnaire to establish effect size: A worked exampleHelen M Kirkby, Sue Wilson, Melanie Calvert, et al.Plos One|October 8, 2013
Informing potential participants about research: observational study with an embedded randomized controlled trialHelen M Kirkby, Melanie Calvert, Richard J McManus, et al.Pageof 1