End of Regulation: Why Are NFL Players Retiring Earlier? - Penn Medicine
Philadelphia Eagles tight end Zach Ertz starting to show his quality – The Mercury News
Collective Force of Head Hits Increases Odds of CTE, Study Says - The New York Times
Philadelphia Eagles Offense Rolling with Extra Use of Tight Ends, News, Scores, Highlights, Stats, and Rumors
111 N.F.L. Brains. All But One Had C.T.E. - The New York Times
Tony Dorsett Is Losing His Mind - D Magazine
Zach Ertz's farewell to Eagles fans: A Philadelphia Inquirer full-page ad
Luke Kuechly Joins N.F.L.'s Under-30 Retirees Club - The New York Times
Trade destinations for Philadelphia Eagles tight end Zach Ertz - ESPN - Philadelphia Eagles Blog- ESPN
Zach Ertz trade: Eagles great got Philadelphia fans and is a future team Hall of Fame player
CQ Researcher - CTE and Athletes
5 NFL Athletes Who Had CTE