%0 Journal Article %A GUNNAR STURFELT %A OLA NIVED %T Instruments to Measure Disease Activity in Systemic Lupus Erythematosus — Is Our Net Tight Enough to Catch the Hydra? %D 2011 %R 10.3899/jrheum.101024 %J The Journal of Rheumatology %P 3-4 %V 38 %N 1 %U https://www.jrheum.org/content/jrheum/38/1/3.full.pdf