- Correspondence to Professor Matthew A Brown, NIHR Biomedical Research Centre at Guy's and St Thomas' NHS Foundation Trust and King's College London, London, SE1 9RT, United Kingdom; ; Professor Huji Xu, Department of Rheumatology and Immunology, Changzheng Hospital, The Second Military Medical University, Shanghai, China;
- Received November 4, 2020
- Revised March 23, 2021
- Accepted March 29, 2021
- First published April 20, 2021.
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