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4 sept 2007 año - NFL issues concussion pamphlet

Descripción:

The NFL releases a concussion pamphlet that says current research on the long term impact of concussions is inconclusive.

Añadido al timeline:

How football has gotten where they are with concussions

ByMatthew LaPorte

23 nov 2017

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647

fecha:

4 sept 2007 año

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