- Correspondence to Dr Murray Urowitz, Center for Prognosis Studies in the Rheumatic Diseases, Toronto Western Hospital, University of Toronto, Lupus Clinic, Toronto, M5T 2S8, Canada;
- Received December 4, 2019
- Revised February 14, 2020
- Accepted February 17, 2020
- First published March 10, 2020.
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