PT - JOURNAL ARTICLE AU - WALTER GRASSI AU - CLAUDIO CERVINI TI - Ultrasonography in rheumatology: an evolving technique AID - 10.1136/ard.57.5.268 DP - 1998 May 01 TA - Annals of the Rheumatic Diseases PG - 268--271 VI - 57 IP - 5 4099 - http://ard.bmj.com/content/57/5/268.short 4100 - http://ard.bmj.com/content/57/5/268.full SO - Ann Rheum Dis1998 May 01; 57