- Correspondence to Dr Xiao Zhang, Department of Rheumatology, Guangdong General Hospital, Guangdong 510080, China; ; Professor Shuang Ye, Department of Rheumatology, School of Medicine, Ren Ji Hospital South Campus, Shanghai Jiao Tong University, Shanghai 200001, China;
- Received July 27, 2018
- Revised August 9, 2018
- Accepted August 10, 2018
- First published September 19, 2018.
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