RT Journal Article SR Electronic T1 Systemic Lupus Erythematosus Disease Activity Index 2000 Responder Index-50 Website JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 733 OP 733 DO 10.3899/jrheum.130030 VO 40 IS 5 A1 ZAHI TOUMA A1 MURRAY B. UROWITZ A1 DAFNA D. GLADMAN YR 2013 UL http://www.jrheum.org/content/40/5/733.abstract AB