RT Journal Article SR Electronic T1 Left Ventricular Regional Dysfunction Using Cardiac Magnetic Resonance Imaging in Rheumatoid Arthritis Patients Without Cardiac Symptoms: Comparison Between Methotrexate and Biologics Treatment Groups JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1560 OP 1562 DO 10.3899/jrheum.121363 VO 41 IS 7 A1 YASUYUKI KOBAYASHI A1 HITOMI KOBAYASHI A1 MASAHARU HIRANO A1 JON T. GILES YR 2014 UL http://www.jrheum.org/content/41/7/1560.abstract AB