Timeline: The NFL's Concussion Crisis, League of Denial: The NFL's Concussion Crisis, FRONTLINE
Junior Seau's death a sobering wake-up call, former NFL players say – East Bay Times
For Patients With Memory Loss, Working Towards Better Diagnosis
Gary Plummer's Non-Traditional Battle Against Cognitive Decline - Sports Illustrated
Concussions are Affecting the Game of Football
Former NFL Player Guesses He Sustained About 2,500 Concussions Throughout His Career
Former Seau teammate Gary Plummer: 'He was crying out for help' – The Mercury News
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Former teammate: Junior Seau forced NFL to settle
How ex-49er Gary Plummer overcame depression after NFL concussions – NBC Sports Bay Area & California
Timeline: The NFL's Concussion Crisis, League of Denial: The NFL's Concussion Crisis, FRONTLINE
Junior Seau's death a sobering wake-up call, former NFL players say – East Bay Times