RT Journal Article SR Electronic T1 Ketamine for the treatment of acute pain JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1663 OP E1663 DO 10.1503/cmaj.210878 VO 193 IS 43 A1 William K. Silverstein A1 David N. Juurlink A1 Jonathan S. Zipursky YR 2021 UL http://www.cmaj.ca/content/193/43/E1663.abstract