RT Journal Article SR Electronic T1 Immediate reactions after mRNA SARS-CoV-2 vaccination JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1842 OP E1842 DO 10.1503/cmaj.211581 VO 193 IS 48 A1 Jeimy, Samira A1 Wong, Tiffany A1 Song, Christine YR 2021 UL http://www.cmaj.ca/content/193/48/E1842.abstract