RT Journal Article SR Electronic T1 Percent Change Was and Is An Embarrassing Mistake JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2448 OP 2451 DO 10.3899/jrheum.100943 VO 37 IS 12 A1 HUGH A. SMYTHE YR 2010 UL http://www.jrheum.org/content/37/12/2448.abstract AB