RT Journal Article SR Electronic T1 Understanding heterogeneity to inform the public health response to COVID-19 in Canada JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E684 OP E685 DO 10.1503/cmaj.201112 VO 192 IS 25 A1 Mishra, Sharmistha A1 Kwong, Jeffrey C. A1 Chan, Adrienne K. A1 Baral, Stefan D. YR 2020 UL http://www.cmaj.ca/content/192/25/E684.abstract