Associations Of Concussion And Playing History With Clinical Outcomes In Young College Football Alumni: 3452 Board #273 May 29 1:30 PM ‐ 3:00 PM. (July 2020) - Walton, Samuel R.; Brett, Benjamin L.; Chandran, Avinash; DeFreese, J. D.; Giovanello, Kelly S.; Nader, Amy; Kerr, Zachary Y.; McCrea, Michael; Guskiewicz, Kevin M.