Accuracy of the ICD-9 code for identification of patients with Wegener's granulomatosis.
Boyd
Mary
M
Specks
Ulrich
U
Finkielman
Javier Daniel
JD
D000328:Adult; D000368:Aged; D005260:Female; D014890:Granulomatosis with Polyangiitis / Q000175:diagnosis*; D006801:Humans; D038801:International Classification of Diseases; D008297:Male; D008875:Middle Aged