Tirmizi, Syed Haider, et al. “EFFICACY OF METHOTREXATE VERSUS LEFLUNOMIDE VERSUS COMBINATION OF BOTH IN ACTIVE RHEUMATOID ARTHRITIS”. Pakistan Armed Forces Medical Journal, vol. 71, no. 6, Dec. 2021, pp. 1916-19, doi:10.51253/pafmj.v6i6.4646.