RT Journal Article SR Electronic T1 The potential benefits of a national vaccine registry for Canada JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E808 OP E808 DO 10.1503/cmaj.78920 VO 193 IS 22 A1 Gorfinkel, Iris S. A1 Lexchin, Joel YR 2021 UL http://www.cmaj.ca/content/193/22/E808.abstract