@article {Nam-Hee Kim2021JE20200596,
	title = {Did Dental Insurance Expansion Improve Dental Care Needs among Korean Adults? Difference in Difference Analysis},
	journal = {Journal of Epidemiology},
	volume = {advpub},
	year = {2021},
	doi = {10.2188/jea.JE20200596},
	author = {Nam-Hee Kim and Hawazin W. Elani and Ichiro Kawachi}
}
