TY - JOUR T1 - Countdown JF - Canadian Medical Association Journal JO - CMAJ SP - E193 LP - E194 DO - 10.1503/cmaj.190837 VL - 192 IS - 8 AU - Amanda Jacqueline Yee Y1 - 2020/02/24 UR - http://www.cmaj.ca/content/192/8/E193.abstract ER -