$200 Q-Collar is designed to prevent athlete brain injuries
Bennet Omalu, Concussions, and the NFL: How One Doctor Changed Football Forever
NFL players still hiding, playing with concussions
What are World Cup players wearing around their necks?
NFL stars could wear motorcycle-style helmets as the sport searches for new ways to protect players from head injury and concussion: 'There are big strides we can still take'
5 NFL players who were sent into retirement by concussions
Concussions among players who wore Guardian Caps over summer dropped more than 50%, NFL says - ESPN
NFL Releases Concussion Data After Use of 'Guardian Caps' During Offseason - Sports Illustrated
Playing with a pillow on your head': Buffalo Bills embrace new helmet covers
Fantasy plays: Players to start and sit for NFL Week 4 - The San Diego Union-Tribune
NFL Executive VP: League Saw 52 Percent Decrease In Concussions At Positions Wearing Guardian Caps - Steelers Depot