RT Journal Article SR Electronic T1 Confronting the COVID-19 surgery crisis: time for transformational change JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP cmaj.200791 DO 10.1503/cmaj.200791 A1 David R. Urbach A1 Danielle Martin YR 2020 UL http://www.cmaj.ca/content/early/2020/05/06/cmaj.200791.abstract AB