RT Journal Article SR Electronic T1 Instruments to Measure Disease Activity in Systemic Lupus Erythematosus — Is Our Net Tight Enough to Catch the Hydra? JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 3 OP 4 DO 10.3899/jrheum.101024 VO 38 IS 1 A1 GUNNAR STURFELT A1 OLA NIVED YR 2011 UL http://www.jrheum.org/content/38/1/3.abstract AB