Shakya, Yagya laxmi, et al. “Head Computed Tomography Findings in Relation to Red Flag Signs Among Patients Presenting With Non-Traumatic Headache : Head CT Findings and Red Flag Sign”. Journal of Patan Academy of Health Sciences, vol. 8, no. 3, Jan. 2022, pp. 79-86, https://jpahs.edu.np/index.php/jpahs/article/view/274.