Parmar, Jitendra, et al. “Chest CT Severity Score in COVID-19 at the Time of Admission and Relationship With Outcome and Duration of Admission-an Early Promising Prognostic Indicator”. Archives of Clinical and Biomedical Research, vol. 6, no. 2, Mar. 2022, pp. 277-89, https://fortunejournals.org/ojs/index.php/acbr/article/view/14910.