a study on the multi-fragmentation and integration of China's social medical insurance system 阶层与地域：我国社会医疗保险制度的多元碎片化与整合研究：a study on the multi-fragmentation and integration of China's social medical insurance system Study on the outpatient coordination of Chinese social medical insurance Research on the welfare distributional effects of China's social medical insurance system 并列题名：Study on the outpatient coordination of Chinese social medical insurance 并列题名：Research on the welfare distributional effects of China's social medical insurance system Effect of the pilot implementation and optimization of the long-term care insurance system 并列题名：Effect of the pilot implementation and optimization of the long-term care insurance system Studies on the reform of social medical insurance system a study on the experimental approach of China's rural old-age insurance policy