TY - JOUR T1 - Encore JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - 408 LP - 408 DO - 10.1136/ard.50.6.408 VL - 50 IS - 6 AU - Gemaennes Y1 - 1991/06/01 UR - http://ard.bmj.com/content/50/6/408.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -