Shamsulnidza, M. S., and M. H. Mahmud. “Diagnostic Reference Level for Computed Tomography Thorax Examination: A Single Centre Study”. Healthscope: The Official Research Book of Faculty of Health Sciences, UiTM, vol. 4, no. 1, Oct. 2021, pp. 119-22, https://healthscopefsk.com/index.php/research/article/view/249.