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CTE diagnosis first step?_00014925.jpg
CTE diagnosis first step?_00014925.jpg

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    Closer to diagnosing NFL brain disease?

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Closer to diagnosing NFL brain disease?

CNN's Dr. Sanjay Gupta reports about an advance in our understanding of the brain disease killing NFL players.

Closer to diagnosing NFL brain disease?

CNN's Dr. Sanjay Gupta reports about an advance in our understanding of the brain disease killing NFL players.