@article {yongjian2020association,
	title = {Association between short-term exposure to air pollution and COVID-19 infection: Evidence from China},
	journal = {Science of The Total Environment},
	year = {2020},
	pages = {138704},
	publisher = {Elsevier},
	author = {Yongjian, Zhu and Jingu, Xie and Fengming, Huang and Liqing, Cao}
}
