- Correspondence to Professor Dong-Qing Ye, Department of Epidemiology and Biostatistics, School of Public Health, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China;
- Received December 26, 2018
- Revised July 8, 2019
- Accepted September 2, 2019
- First published September 28, 2019.
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