RT Journal Article SR Electronic T1 Doubts about first report of krokodil use in Canada JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1033 OP E1033 DO 10.1503/cmaj.73204 VO 191 IS 37 A1 Mitchell, Ian V. YR 2019 UL http://www.cmaj.ca/content/191/37/E1033.abstract