Brophy, S., Gravenor, M. B., Siebert, S., & Gravenor, M. (2010). Major flares as a diagnostic and prognostic measure when assessing ankylosing spondylitis severity. International Journal of Clinical Rheumatology, 5(4), pp. 399-401. doi:10.2217/ijr.10.34

Brophy, Sinead, Mike B. Gravenor, Stefan Siebert, and Michael Gravenor. "Major Flares As a Diagnostic and Prognostic Measure When Assessing Ankylosing Spondylitis Severity." International Journal of Clinical Rheumatology 5, no. 4 (2010): 399-401.

Brophy, Sinead, Mike B. Gravenor, Stefan Siebert, and Michael Gravenor. "Major Flares As a Diagnostic and Prognostic Measure When Assessing Ankylosing Spondylitis Severity." International Journal of Clinical Rheumatology 5.4 (2010): 399-401.