Demaryius Thomas is latest NFL player to be diagnosed with CTE
NFL Players Who Experienced Concussion Symptoms During Careers Show Reduced Cognitive Performance Decades After Retirement - Neuroscience News
NFL Health and Safety Fact Sheet
Russell Gage's injury highlights the NFL's concussion problem and how it hurts players long-term
Ex-NFL players six times more likely than the general public to report cognitive problems, study finds - The Boston Globe
CTE In Athletes Linked To Hits To The Head, Even Without Concussions : Shots - Health News : NPR
NFL & Concussions: First Evidence of Brain Injury in Living Ex-Players
What is the Q Collar, the device NFL players are wearing around their necks
CTE Reportedly Discovered in 5 Living Former NFL Players, News, Scores, Highlights, Stats, and Rumors
NFL-Funded Study Identifies Positions Most at Risk of Brain Injury
Abnormal Levels of a Protein Linked to C.T.E. Found in N.F.L Players' Brains, Study Shows - The New York Times
After the NFL: Long-Term Damage of Concussions and Head Trauma - TheraSpecs