Study: 99% of the brains of NFL players studied had C.T.E.
https://www.nytimes.com/interactive/2017/07/25/sports/football/nfl-cte.html?smid=tw-nytsports&smtyp=cur
https://www.nytimes.com/interactive/2017/07/25/sports/football/nfl-cte.html?smid=tw-nytsports&smtyp=cur
https://www.dallasnews.com/news/investigations/2017/04/17/players-fought-nfl-concussions-now-fighting-lawyers
http://www.forbes.com/sites/darrenheitner/2017/02/13/nflpa-issues-fraud-alert-for-concussion-settlement-payouts/#708057bb25f3