RT Journal Article SR Electronic T1 Lia Mattacchione JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E530 OP E530 DO 10.1503/cmaj.210525 VO 193 IS 15 A1 Seema Marwaha YR 2021 UL http://www.cmaj.ca/content/193/15/E530.abstract