RT Journal Article SR Electronic T1 Methotrexate-related pulmonary complications in rheumatoid arthritis. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 434 OP 439 DO 10.1136/ard.53.7.434 VO 53 IS 7 A1 P Barrera A1 R F Laan A1 P L van Riel A1 P N Dekhuijzen A1 A M Boerbooms A1 L B van de Putte YR 1994 UL http://ard.bmj.com/content/53/7/434.abstract AB