“…only leagues that adhered to Pop Warner’s rules saw a meaningful drop in concussions. Leagues that used Heads Up Football alone actually saw slightly higher concussion rates…”
Link: http://nyti.ms/2amWLjN
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“…only leagues that adhered to Pop Warner’s rules saw a meaningful drop in concussions. Leagues that used Heads Up Football alone actually saw slightly higher concussion rates…”
Link: http://nyti.ms/2amWLjN