Gupta, M.K., Gupta, P.K. and Panthee, R. (2023) “Measurement of Serum Vitamin D Level and its association with Rheumatoid Arthritis, A prospective study at eastern region of Nepal”., Birat Journal of Health Sciences, 8(2), pp. 2045–2049. doi:10.3126/bjhs.v8i2.59858.