- Correspondence to Dr Dafna Gladman, Centre for Prognosis Studies in the Rheumatic Diseases 1E-410B, University of Toronto Psoriatic Arthritis Clinic, Toronto Western Hospital, 399 Bathurst Street, Toronto, Ontario, Canada M5T 2S8;
- Received February 7, 2013
- Revised May 22, 2013
- Accepted July 9, 2013
- First published July 25, 2013.
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