References for “Heads in the game”

Published: February, 2008

Cantu RC. "Athletic concussion: Current understanding as of 2007," Neurosurgery (June 2007), Vol. 60, No.7, pp. 963-4.

Guskiewicz KM, et al. "Cumulative effects associated with recurrent concussion in collegiate football players," Journal of the American Medical Association (Nov. 19, 2003), Vol. 290, No. 19, pp. 2549-2555.

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