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Xu, Yongjian, Jianmin Gao, Zhongliang Zhou, Qinxiang Xue, Jinjuan Yang, Hao Luo, Yanli Li, Sha Lai, and Gang Chen. "Measurement and Explanation of Socioeconomic Inequality in Catastrophic Health Care Expenditure: Evidence From the Rural Areas of Shaanxi Province." BMC Health Serv Res 2015.

Xu, Yongjian, et al. "Measurement and Explanation of Socioeconomic Inequality in Catastrophic Health Care Expenditure: Evidence From the Rural Areas of Shaanxi Province." BMC Health Serv Res 2015.