Study: 110 out of 111 former NFL players had brain disease after death
Brain Health Archives – United Brain Association
Alex Smith Is Wearing a New Helmet Designed to Reduce Concussions
NFL's new quarterback specific helmet design – United Brain Association
Football helmet - Wikipedia
NFL faces intense scrutiny over concussion protocols
Bennet Omalu, Concussions, and the NFL: How One Doctor Changed Football Forever
The NFL calls Vicis Zero1 helmets the safest yet
The link between head injuries and CTE in football, explained - Vox
A former Harvard quarterback tackles NFL concussion woes
CTE found in 99 percent of former NFL players' brains donated in new study
NFL: Bigger QB helmets from Vicis designed to limit head injuries
Tuesday Morning Quarterback
Safety first: Lopers to wear padded caps in practice to prevent concussions