RT Journal Article SR Electronic T1 Systematic literature review investigating whether methotrexate causes chronic pulmonary fibrosis JF Future Healthcare Journal JO Future Healthc J FD Royal College of Physicians SP 4 OP 4 DO 10.7861/futurehealth.6-2-s4 VO 6 IS Suppl 2 A1 Ed Quah A1 Constanta Amoasii A1 Tareg Mudawi A1 Julie Dawson YR 2019 UL http://www.rcpjournals.org/content/6/Suppl_2/4.abstract AB