Junior Seau's Death Draws More Focus To NFL's Issues With Head Injuries
Stunning documentary, “League of Denial: The NFL's Concussion Crisis” – The Denver Post
Shield of silence: How will NFL respond to Gruden, WFT crisis? 'They want it to go away' - The Athletic
Brains under pressure: Concussion crisis continues to haunt the NFL
N.F.L.'s Flawed Concussion Research and Ties to Tobacco Industry - The New York Times
The NFL concussion protocol cannot save football
Investigation: NFL 'improperly attempted to influence' concussion research
The NFL's Bombshell on the Scary Truth About Brain Disease – Mother Jones
Understanding the Concussion Crisis in Sport - Engaging Sports
Inside the Race to Solve America's Concussion Crisis
Concussions in American football - Wikipedia
Frontline League of Denial: The NFL's Concussion Crisis (TV Episode 2013) - IMDb
NFL has hit on something with 'Julian Edelman Rule' - The Boston Globe