Roger Goodell

NFL Commissioner Roger Goodell takes questions during an NFL football news conference in New York, Monday. The NFL is partnering with private companies as well as the U.S. Military to further research on head injuries.

( AP photo / March 11, 2013 )

NFL Commissioner Roger Goodell takes questions during an NFL football news conference in New York, Monday. The NFL is partnering with private companies as well as the U.S. Military to further research on head injuries.

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