RT Journal Article SR Electronic T1 Accuracy of the ICD-9 Code for Identification of Patients with Wegener’s Granulomatosis JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 474 OP 474 DO 10.3899/jrheum.091017 VO 37 IS 2 A1 MARY BOYD A1 ULRICH SPECKS A1 JAVIER DANIEL FINKIELMAN YR 2010 UL http://www.jrheum.org/content/37/2/474.abstract AB