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APA Citation
Kerr, Z. Y., Marshall, S. W., Simon, J. E., Hayden, R., Snook, E. M., Dodge, T., Gallo, J. A., Valovich McLeod, T. C., Mensch, J., Murphy, J. M., Nittoli, V. C., Dompier, T. P., Ragan, B., Yeargin, S. W., & Parsons, J. T. (n.d.). injury Rates in Age-Only Versus Age-and-Weight Playing Standard Conditions in American Youth Football. Orthopaedic journal of sports medicine, 3(9), . http://access.bl.uk/ark:/81055/vdc_100069058947.0x000015