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- The development of Assessment of SpondyloArthritis International Society classification criteria for axial spondyloarthritis (part II): validation and final selection.Ann Rheum Dis. 2009; 68: 777-783
- Age at disease onset and diagnosis delay in HLA-B27 negative vs. positive patients with ankylosing spondylitis.Rheumatol Int. 2003; 23: 61-66
- Late-onset ankylosing spondylitis and spondylarthritis: an update on clinical manifestations, differential diagnosis, and pharmacological therapies.Drugs Aging. 2010; 27: 523-531
- New criteria for inflammatory back pain in patients with chronic back pain: a real patient exercise by experts from the Assessment of SpondyloArthritis international Society (ASAS).Ann Rheum Dis. 2009; 68: 784-788
- Continuous NSAID use reverts the effects of inflammation on radiographic progression in patients with ankylosing spondylitis.Ann Rheum Dis. 2012; 71: 1623-1629
- Long term safety of etanercept in elderly subjects with rheumatic diseases.Ann Rheum Dis. 2006; 65: 379-384
- Sulfasalazine for ankylosing spondylitis.Cochrane Database Syst Rev. 2014 Nov 27; CD004800
Conflict of interest: None.
Authorship: All authors had full access to data and contributed to the writing of this manuscript.