RT Journal Article SR Electronic T1 How the 1950s changed our understanding of traumatic encephalopathy and its sequelae JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E140 OP E142 DO 10.1503/cmaj.171204 VO 190 IS 5 A1 Casper, Stephen T. YR 2018 UL http://www.cmaj.ca/content/190/5/E140.abstract