RT Journal Article SR Electronic T1 Asthma and COVID-19 JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E551 OP E551 DO 10.1503/cmaj.200617 VO 192 IS 20 A1 Elissa M. Abrams A1 Geert W. ‘t Jong A1 Connie L. Yang YR 2020 UL http://www.cmaj.ca/content/192/20/E551.abstract