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APA Citation
Zemek, R., Grool, A. M., Aglipay, M., Momoli, F., Meehan, W. P., Freedman, S. B., Yeates, K. O., Gravel, J., Gagnon, I., Boutis, K., Meeuwisse, W., Barrowman, N., Osmondon, M. H., & , (2017). relationship of early participation in physical activities to persistent post-concussive symptoms following acute paediatricpediatric concussion. British journal of sports medicine, 51(11), A20. http://access.bl.uk/ark:/81055/vdc_100135175935.0x000029