Recent progress in epidemiology, clinical features, and therapy of multiple sclerosis in China.

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"The authors declare that there is no conflict of interest."

"Funding: The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by grants from the General Program of the National Natural Science Foundation of China (No. 82171337), Natural Science Foundation of Jilin Province Science and Technology Development Plan Project (20190201043JC), Key Research and Development Project of Social Development Division of Jilin Science and Technology Department (20200403109SF), Special Project for Health Professionals of Jilin Provincial Finance Department (JLSWSRCZX2020-0056), Science and Technology Research Project of Jilin Education Department (JJKH20211204KJ), as well as the grants from the Swedish Research Council (No. 2015-03005) and grants from The First Hospital of Jilin University."