- Correspondence to Dr Murray Urowitz, Center for Prognosis Studies in the Rheumatic Diseases, Toronto Western Hospital, University of Toronto, Lupus Clinic, Toronto, ON M5T2S8, Canada;
- Received November 21, 2018
- Revised March 19, 2019
- Accepted March 23, 2019
- First published April 16, 2019.
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