NFL players who experienced concussion symptoms show reduced cognitive performance decades after retirement
NFL reaches $765 million deal in concussion suits with 4,500 ex-players, including Cowboys stars
49ers Anthony Davis Is Retiring a Second Time Because of Concussions
How NFL players are thinking about life after football - ESPN
League of Denial: The NFL, Concussions, and the Battle for Truth: 9780770437565: Fainaru-Wada, Mark, Fainaru, Steve: Books
5 NFL players who were sent into retirement by concussions
Now-retired Andrew Hawkins to donate his brain to CTE research - The Boston Globe
NFL Concussion Protocol After Miami Dolphins Quarterback Tua Tagovailoa - Bloomberg
Luke Kuechly Joins N.F.L.'s Under-30 Retirees Club - The New York Times
Five NFL Quarterbacks That Should Retire After The Season
The link between head injuries and CTE in football, explained - Vox
NFL concussion settlement leaves former players struggling for relief