@article {stieb2020ecological,
	title = {An ecological analysis of long-term exposure to PM2. 5 and incidence of COVID-19 in Canadian Health Regions},
	journal = {Environmental research},
	year = {2020},
	pages = {110052},
	publisher = {Elsevier},
	author = {Stieb, David M and Evans, Greg J and To, Teresa M and Brook, Jeffrey R and Burnett, Richard T}
}
