RT Journal Article SR Electronic T1 Does a Positive HLA-B27 Test Increase Your Risk of Mortality? JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 559 OP 560 DO 10.3899/jrheum.150017 VO 42 IS 4 A1 NIGIL HAROON YR 2015 UL http://www.jrheum.org/content/42/4/559.abstract AB