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Showing articles 0 to 2 of 2 Filter Applied: concussion,recurrent (Click to remove) Concussion NEJM 356:166-172, Ropper,A.H. &Gorson,K.C., 2007 Cumulative Effects Associated with Recurrent Concussion in Collegiate Football Players JAMA 290:2549-2555,2604, Guskiewicz,K.M.,et al, 2003 Showing articles 0 to 2 of 2