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November 2, 2012 in Health
Evan Vucci photo

In this Oct. 7, 2012, file photo, Washington Redskins quarterback Robert Griffin III walks off the field after being hit by Atlanta Falcons defensive end Jonathan Massaquoi during the second half of an NFL football game in Landover, Md. NFL executives want to change the culture of the league _ and all of football _ to reduce head injuries.