Bukhari, Qurrat-ul-Ain, Moosa Khan, Kausar Moin Mirza, and Muzna Hameed Dar. 2017. “Comparative Effects of Combination Therapies; Methotrexate With Leflunomide &Amp; Sulfasalazine in the Treatment of Rheumatoid Arthritis”. Journal of Bahria University Medical and Dental College 7 (2):102-6. https://jbumdc.bahria.edu.pk/index.php/ojs/article/view/245.