RT Journal Article SR Electronic T1 Sixty-nine years after surviving the polio epidemic JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1915 OP E1917 DO 10.1503/cmaj.210985 VO 193 IS 50 A1 McMahon, Barry J. A1 Dojeiji, Sue A1 Leiva, Rene A. A1 Fisher, Joan M. YR 2021 UL http://www.cmaj.ca/content/193/50/E1915.abstract