RT Journal Article SR Electronic T1 Implementing digital passports for SARS-CoV-2 immunization in Canada JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E486 OP E488 DO 10.1503/cmaj.210244 VO 193 IS 14 A1 Wilson, Kumanan A1 Flood, Colleen M. YR 2021 UL http://www.cmaj.ca/content/193/14/E486.abstract