TY - JOUR T1 - Encore JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - 68 LP - 68 DO - 10.1136/ard.49.1.68 VL - 49 IS - 1 AU - Gemaennes Y1 - 1990/01/01 UR - http://ard.bmj.com/content/49/1/68.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -