Changes In Health Over 18-years And In Relation To Concussion History In Former NFL Players: 1043. (August 2021) - Walton, Samuel R.; Brett, Benjamin L.; Kerr, Zachary Y.; DeFreese, J. D.; Chandran, Avinash; Mannix, Rebekah; Echemendia, Ruben J.; Meehan, William P.; McCrea, Michael A.; Guskiewicz, Kevin M.