RT Journal Article SR Electronic T1 COVID-19 lockdown revisionism JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E552 OP E554 DO 10.1503/cmaj.221543 VO 195 IS 15 A1 Murdoch, Blake A1 Caulfield, Timothy YR 2023 UL http://www.cmaj.ca/content/195/15/E552.abstract