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APA Citation
Aubry, M., Dvořák, J., McCrory, P., Meeuwisse, W., Raftery, M., Sills, A., & Engebretsen, L. (2013). zero tolerance: the future of head injury in sports. British journal of sports medicine, 47(5), 249. http://access.bl.uk/ark:/81055/vdc_100144731186.0x00002d