Ward, Joe, Josh Williams, and Sam Manchester. "111 N.F.L. Brains. All But One Had C.T.E." The New York Times. The New York Times, 25 July 2017. Web. 28 July 2017.

​

Slattery, Denis, and Amara Grautski. "Ravens OL John Urschel, 26, abruptly retires after CTE study." NY Daily News. N.p., 27 July 2017. Web. 28 July 2017.

​

"Publications." Suicide in Professional Athletes: is it related to the sport? N.p., n.d. Web. 16 July 2017.

​

Fralick, Michael, Deva Thiruchelvam, Homer C. Tien, and Donald A. Redelmeier. "Risk of suicide after a concussion." Canadian Medical Association Journal. N.p., n.d. Web. 16 July 2017.

​

"Traumatic Brain Injury & Concussion." Centers for Disease Control and Prevention. Centers for Disease Control and Prevention, 14 June 2017. Web. 16 July 2017.

​

Ropper, Allan H., and Kenneth C. Gorson. "Concussion." New England Journal of Medicine 356.2 (2007): 166-72. Web.

Fenno, Nathan. "NCAA Denies Legal Duty to Protect Student-

Athletes."

 

The Washington Times (Washington, DC). N.p., 19 Dec. 2013. Web. 19 July 2017.

​

Maroon, Joseph, and Julian Bailes. "The Health Benefits of Youth Contact Sports Outweigh the Risks." Opposing Viewpoints Online Collection, Gale, 2017. Accessed 19 July 2017. Originally published as "Weighing the childhood risks of contact sports," Washington Times, 29 Jan. 2015.

​

PBS. Public Broadcasting Service, 07 Oct. 2013. Web. 19 July 2017.

​