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Associated Press
This undated photo provided by the Avielle Foundation shows Avielle Richman, 6, who was killed in the shooting massacre by Adam Lanza at Sandy Hook Elementary School in Newtown, Conn., on Dec. 14, 2012.  As scientists, her parents, Jeremy Richman and Jennifer Hensel, wanted answers about what could lead a person to commit such violence.  On Monday, April 15, 2013, they announced a scientific advisory board for the Avielle Foundation, which was established with the goal of reducing violence. (AP Photo/The Avielle Foundation)

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