BUKHARI, Q.- UL-A.; ISMAIL, K.; DAR, M. H.; ABBAS, A.; ATA, M. Effects of Combination Therapy of Methotrexate with Leflunomide & Hydroxychloroquine: Comparative Clinical Trial. Journal of Pharmaceutical Research International, v. 32, n. 24, p. 57-63, 8 out. 2020.