RT Journal Article SR Electronic T1 Autoantibodies in twins discordant for rheumatoid arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 708 OP 709 DO 10.1136/ard.2010.132860 VO 70 IS 4 A1 A J Svendsen A1 J V Hjelmborg A1 A Wiik A1 G Houen A1 K O Kyvik A1 P Junker YR 2011 UL http://ard.bmj.com/content/70/4/708.abstract AB