RT Journal Article SR Electronic T1 Correction JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 661 OP 661 DO 10.3899/jrheum.071028C1 VO 36 IS 3 YR 2009 UL http://www.jrheum.org/content/36/3/661.1.abstract AB