“Methotrexate Plus Narrow Band Ultraviolet B (NBUVB) Versus Methotrexate Alone in the Treatment of Moderate to Severe Plaque Psoriasis: A Randomized Clinical Trial”. Nepal Journal of Dermatology, Venereology & Leprology, vol. 13, no. 1, Jan. 2016, pp. 12-23, https://doi.org/10.3126/njdvl.v13i1.14298.