RT Journal Article SR Electronic T1 Methotrexate in Our Hearts JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 447 OP 449 DO 10.3899/jrheum.181269 VO 46 IS 5 A1 LOTTA LJUNG A1 MARIE HOLMQVIST YR 2019 UL http://www.jrheum.org/content/46/5/447.abstract AB