RT Journal Article SR Electronic T1 Aggressively find, test, trace and isolate to beat COVID-19 JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP cmaj.202120 DO 10.1503/cmaj.202120 A1 Matukas, Larissa M. A1 Dhalla, Irfan A. A1 Laupacis, Andreas YR 2020 UL http://www.cmaj.ca/content/early/2020/09/09/cmaj.202120.abstract