キャスト
Will Lyman
Himself - Narrator
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Harry Carson
Himself
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Steve Fainaru
Himself
Mikey Collins
Himself - University of Pittsburgh Medical Center
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Bennett Omalu
Himself - Medical Examiner
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Ann McKee
Herself - Neuropathologist, BU CTE Center
Stan Savran
Himself - Pittsburgh Sports Reporter
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Julian Bailes
Himself - Team Physician, Steelers, 1988-97