TY - JOUR T1 - Journal summary JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - 341 LP - 342 DO - 10.1136/ard.49.6.341 VL - 49 IS - 6 A2 - , Y1 - 1990/06/01 UR - http://ard.bmj.com/content/49/6/341.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -