RT Journal Article SR Electronic T1 Rituximab therapy for refractory systemic-onset juvenile idiopathic arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 607 OP 608 DO 10.1136/ard.2008.092106 VO 68 IS 4 A1 J Narváez A1 C Díaz-Torné A1 X Juanola A1 C Geli A1 J M Llobet A1 J M Nolla A1 C Díaz-López YR 2009 UL http://ard.bmj.com/content/68/4/607.abstract AB