RT Journal Article SR Electronic T1 Seronegative Spondyloarthritis and Magnetic Resonance Imaging JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 200 OP 200 DO 10.3899/jrheum.080721 VO 36 IS 1 A1 WALTER P. MAKSYMOWYCH YR 2009 UL http://www.jrheum.org/content/36/1/200.3.abstract AB