[1] BRISTOL ROYAL INFIRM & GEN HOSP,DEPT CLIN RADIOL,BRISTOL BS2 8HW,AVON,ENGLAND
[2] UNIV LJUBLJANA,MED CTR,INST DIAGNOST & INTERVENT RADIOL,61000 LJUBLJANA,SLOVENIA
[3] UNIV LJUBLJANA,MED CTR,DEPT RHEUMATOL,61000 LJUBLJANA,SLOVENIA
[4] INST JOZEF STEFAN,LJUBLJANA,SLOVENIA
[5] HOECHST AG,DEPT CLIN RES,RHEUMATOL SECT,W-6200 WIESBADEN 12,GERMANY