RT Journal Article SR Electronic T1 Rheumatoid arthritis in Poland and Lithuania: different clinical course and HLA associations despite similar genetic background JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 165 OP 166 DO 10.1136/ard.2003.019158 VO 64 IS 1 A1 R Płoski A1 I Butrimiene A1 E Kamińska A1 K Valiukiene A1 P Sliwińska A1 E Kubasiewicz A1 A Kozakiewicz A1 A Smerdel A1 V Kučinskas A1 J Jaworski A1 E Jastrzębska A1 O Forre A1 A Venalis A1 J Pazdur YR 2005 UL http://ard.bmj.com/content/64/1/165.abstract AB