RT Journal Article SR Electronic T1 Still Trying to Understand Methotrexate JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2099 OP 2101 DO 10.3899/jrheum.141081 VO 41 IS 11 A1 JOEL M. KREMER YR 2014 UL http://www.jrheum.org/content/41/11/2099.abstract AB