RT Journal Article SR Electronic T1 Interaction between B-cell activation factor and methotrexate impacts immunogenicity of seasonal influenza vaccination in patients with rheumatoid arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 282 OP 284 DO 10.1136/annrheumdis-2018-214025 VO 78 IS 2 A1 Park, Jin Kyun A1 Lee, Ye Ji A1 Bitoun, Samuel A1 Winthrop, Kevin L A1 Choi, Yunhee A1 Lee, Eun Bong A1 Mariette, Xavier YR 2019 UL http://ard.bmj.com/content/78/2/282.abstract AB