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1:00:40
His autopsy of Steelers legend Mike Webster led to the discovery of a new disease - CTE.
30:05
Football took a major toll on his body, contributed to as many as 74 surgeries.
35:08
He organized early conferences to educate NFL players about the risk of concussions.
46:00
He developed a test to assess whether football players should return after concussion.
2:11
Programmer Shel Kaphan talks to FRONTLINE about the "Amazon Empire."
