RT Journal Article SR Electronic T1 Measures to support a safer drug supply JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1731 OP E1731 DO 10.1503/cmaj.77303 VO 192 IS 49 A1 Andrea Ryan A1 Andrea Sereda A1 Nadia Fairbairn YR 2020 UL http://www.cmaj.ca/content/192/49/E1731.abstract