Thaniyan, A., F. F. A. Ayman, H. O. Mirghani, B. A. Al-Sayed, and T. H. Merghani. “Histopathological Features of Methotrexate Induced Pulmonary Lesions in Rheumatoid Arthritis Patients: A Systematic Review of Case Reports”. Open Access Macedonian Journal of Medical Sciences, vol. 5, no. 2, Apr. 2017, pp. 266-70, doi:10.3889/oamjms.2017.049.