Has the Copayment Ceiling Improved Financial Protection in the Korean National Health Insurance System? Evidence From the 2009 Policy Change
Journal of Preventive Medicine and Public Health. 2017;50(6):393-400 
Has the National Health Insurance improved the inequality in the use of tertiary-care hospitals in Korea?
Health Policy. 2014;118(3):377-385
Age Structural Transitions and Copayment Policy Effectiveness: Evidence from Taiwan’s National Health Insurance System
International Journal of Environmental Research and Public Health. 2020;17(12):4183
Has cost containment after the National Health Insurance system been successful?
Health Policy. 2008;85(3):321-335
Mutual health insurance in Rwanda: Evidence on access to care and financial risk protection
Health Policy. 2011;99(3):203-209
Children’s Dental Sealant Use and Caries Prevalence Affected by National Health Insurance Policy Change: Evidence from the Korean National Health and Nutrition Examination Survey (2007–2015)
International Journal of Environmental Research and Public Health. 2019;16(15):2773
Incentives for voluntary health insurance in a national health system: Evidence from Italy
Health Policy. 2021;125(6):685-692
The Financial Protection of National Health Insurance: Evidence From a Cross Section of State and Federal Workers in Akwa Ibom, Nigeria
. 2021;
Financial protection effects of private health insurance: experimental evidence from Chinese households with resident basic medical insurance
International Journal for Equity in Health. 2021;20(1):
Inequalities in the benefits of national health insurance on financial protection from out-of-pocket payments and access to health services: cross-sectional evidence from Ghana
Health Policy and Planning. 2019;34(9):694-705