RT Journal Article SR Electronic T1 Maintenance of Low Disease Activity following Tumor Necrosis Factor Inhibitor Dose Tapering in Ankylosing Spondylitis JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1292 OP 1292 DO 10.3899/jrheum.170057 VO 44 IS 8 A1 LAUREN STEEL A1 KARL GAFFNEY YR 2017 UL http://www.jrheum.org/content/44/8/1292.1.abstract AB