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APA Citation
Exeter, D. J., Elley, C. R., Fulcher, M. L., Lee, A. C., Drezner, J. A., & Asif, I. M. (2014). standardised criteria improve accuracy of ECG interpretation in competitive athletes: a randomised controlled trial. British journal of sports medicine, 48(15), 1167–1171. http://access.bl.uk/ark:/81055/vdc_100135161406.0x000028