RT Journal Article SR Electronic T1 On self-whitening … JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1641 OP E1641 DO 10.1503/cmaj.77022 VO 192 IS 48 A1 Agarwal, Gina (Ragini) YR 2020 UL http://www.cmaj.ca/content/192/48/E1641.abstract