RT Journal Article SR Electronic T1 European Scleroderma Study Group to define disease activity criteria for systemic sclerosis. IV. Assessment of skin thickening by modified Rodnan skin score JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 904 OP 905 DO 10.1136/ard.62.9.904 VO 62 IS 9 A1 Valentini, G A1 D’Angelo, S A1 Della Rossa, A A1 Bencivelli, W A1 Bombardieri, S YR 2003 UL http://ard.bmj.com/content/62/9/904.abstract AB