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. 2014 Feb 25;66(3):667–673. doi: 10.1002/art.38283

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© 2014 The Authors. Arthritis & Rheumatology is published by Wiley Periodicals, Inc. on behalf of the American College of Rheumatology.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Spondyloarthritis Research Consortium of Canada (SPARCC) sacroiliac (SI) joint and spine magnetic resonance imaging scores by duration of spondyloarthritis symptoms.