Sah, Bajarang Prasad, et al. “Drug Utilization Pattern Using World Health Organization Prescribing Indicators at Otorhinolaryngology OPD of a Tertiary Teaching Hospital of Eastern Nepal”. Birat Journal of Health Sciences, vol. 5, no. 2, Oct. 2020, pp. 1076-81, https://doi.org/10.3126/bjhs.v5i2.31409.