Shah, R. K., S. Timsinha, S. K. Sah, U. K. Mehta, and R. K. Chaudhary. “Prevalence and Pattern of Substance Use Among Undergraduate Medical Students at Birat Medical College and Teaching Hospital”. Birat Journal of Health Sciences, vol. 6, no. 1, June 2021, pp. 1392-5, doi:10.3126/bjhs.v6i1.37644.