RT Journal Article SR Electronic T1 Rheumatoid Arthritis-associated Polymorphisms at 6q23 Are Associated with Radiological Damage in Autoantibody-positive RA JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2057 OP 2057 DO 10.3899/jrheum.120144.C1 VO 39 IS 10 YR 2012 UL http://www.jrheum.org/content/39/10/2057.abstract AB