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Andrew Brandt, Director of the Jeffrey S. Moorad Center for Sports Law, speaks during a concussion symposium at Villanova University School of Law, March 15, 2013, in Villanova, Pennsylvania (Credit: AP Photo/Matt Rourke)

Andrew Brandt, Director of the Jeffrey S. Moorad Center for Sports Law, speaks during a concussion symposium at Villanova University School of Law, March 15, 2013, in Villanova, Pennsylvania (Credit: AP Photo/Matt Rourke)