RT Journal Article SR Electronic T1 Virtual overdose monitoring services: a novel adjunctive harm reduction approach for addressing the overdose crisis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1568 OP E1572 DO 10.1503/cmaj.220579 VO 194 IS 46 A1 Matskiv, George A1 Marshall, Tyler A1 Krieg, Oona A1 Viste, Dylan A1 Ghosh, S. Monty YR 2022 UL http://www.cmaj.ca/content/194/46/E1568.abstract