LOW DIAGNOSTIC VALUE OF CLIFT ASSAY FOR ANTI-DSDNA ANTIBODIES IN UNSELECTED PATIENTS WITH RHEUMATIC SYMPTOMS. LONG-TERM RESULTS FROM THE SCANDINAVIAN ANTI-DNA STUDY - Compagno, Michele; Jacobsen, Sören; Rekvig, Ole Petter; Truedsson, Lennart; Heegaard, Niels H H; Nossent, H; Jönsen, Andreas; Jacobsen, Rasmus Sleimann; Eilertsen, Gro Ø; Sturfelt, Gunnar; Bengtsson, Anders (EULAR 2011, London, United Kingdom, 2011-05-25 - 2011-05-28, 2011)