Khadka, D., Agrawal, S., & Dhali, T. (2016). Methotrexate Versus Methotrexate Plus Folic Acid in the Treatment of Moderate to Severe Plaque Psoriasis: A Randomized Clinical-Trial. Nepal Journal of Dermatology, Venereology &Amp; Leprology, 14(1), 29–36. https://doi.org/10.3126/njdvl.v14i1.15835