RT Journal Article SR Electronic T1 Consider the Tidemark JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 890 OP 892 DO 10.3899/jrheum.110942 VO 39 IS 5 A1 PETER A. SIMKIN YR 2012 UL http://www.jrheum.org/content/39/5/890.abstract AB