Notable injuries, news from Sunday's Week 13 games
Concussion Watch: NFL Head Injuries in Week 12
The Football Player's Brain That Sparked the NFL's Concussion Crisis - The Atlantic
Injury report: Denzel Ward clears concussion protocol ahead Week 1 against the Bengals
Tua Tagovailoa head injury raises many NFL concussion protocol questions - NBC Sports
Cleveland Browns vs. Tennessee Titans final Week 13 injury report
Aaron Hernandez had one documented concussion during Patriots career - The Boston Globe
NFL medical director wants better solutions to concussion cases
UW, Seattle Children's studying concussions in young athletes
How Tua Tagovailoa has been working this offseason to avoid head injuries
Brandin Cooks injury update: Texans WR being cleared of concussion in Week 13 - DraftKings Network
Banged-up Patriots rule out WR Jakobi Meyers, CB Jalen Mills, OL Isaiah Wynn Monday night against Cardinals - The Boston Globe
League of Denial: The NFL, Concussions and the Battle for Truth: 9780770437541: Fainaru-Wada, Mark, Fainaru, Steve: Books
NFL Concussions: The 2012-13 Season In Review