RT Journal Article SR Electronic T1 Retracted letter: “Don’t use an instrument of oppression as a symbol of diversity and inclusion” JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1936 OP E1936 DO 10.1503/cmaj.212121 VO 193 IS 51 YR 2021 UL http://www.cmaj.ca/content/193/51/E1936.abstract