RT Journal Article SR Electronic T1 Anticardiolipin antibody negative occlusive vascular retinopathy in systemic lupus erythematosus. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 133 OP 134 DO 10.1136/ard.49.2.133-b VO 49 IS 2 A1 P H Dessein A1 R F Gledhill A1 R A Asherson YR 1990 UL http://ard.bmj.com/content/49/2/133.2.abstract AB