NFL concussion protocol under scrutiny after Texans QB twitches in end zone - ABC7 San Francisco
Football's next generation isn't as worried about concussions as you might think
Can X2 and Riddell help NFL football with the concussions crisis?
NFL, union try to change culture on concussions - The San Diego Union-Tribune
Football-related head injuries causing concern among Arizona parents
NFL star Joe Burrow admits he's suffered memory loss in worrying concussion claim - Mirror Online
The Concussion Diaries: One Football Player's Secret Struggle with CTE
Football May Take a Toll on the Brain, Even Without Concussions - The New York Times
How Concussions Affect Your Brain
CTE Risk Doubles After 3 Years of Playing Football, The Brink