Brain Experts to the NFL After Tua Tagovailoa's Head Injury: What Are You Thinking?
Can Science Solve Football's Concussion Crisis?
Concussions in the NFL have increased since protocols were put in place in 2012 – Orange County Register
Tom Savage debacle needs to lead to concussion protocol fix, more notes
How does the NFL's concussion protocol work? Explaining the five-step process for return to play
Tua Tagovailoa and the NFL's Horrible Handling of Head Injuries - The Ringer
Star football player's concussion a reminder that 'these things are serious,' sports medicine doctor says, MUSC
NFL Concussion Data Spotlights Increase in Injuries - ABC News
5 NFL players who were sent into retirement by concussions