RT Journal Article SR Electronic T1 Is shift work a risk factor for rheumatoid arthritis? The Finnish Public Sector study JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 679 OP 680 DO 10.1136/ard.2008.099184 VO 69 IS 4 A1 Sampsa Puttonen A1 Tuula Oksanen A1 Jussi Vahtera A1 Jaana Pentti A1 Marianna Virtanen A1 Paula Salo A1 Mika Kivimäki YR 2010 UL http://ard.bmj.com/content/69/4/679.abstract AB