Guardian helmet caps are being used to mitigate concussion issues
NFL introduces Guardian Caps across league to limit number of brain injuries in preseason
Guardian Caps show promise in tackling concussion concerns in football
Star football player's concussion a reminder that 'these things are serious,' sports medicine doctor says, MUSC
Oklahoma Sooners Continue to be Proactive in Player Safety With Guardian Caps - Sports Illustrated Oklahoma Sooners News, Analysis and More
US health body rules collision sports cause CTE in landmark change, Concussion in sport
Football's Concussion Crisis Is Awash With Pseudoscience
Puffy Guardian Caps Could Reduce NFL Player Concussions
NFL report: concussions dropped 50 PERCENT when players wore new 'Guardian Caps' over the summer