Samreen Mushtaq, Abdul Sattar, Sadia Anjum. “Correlation Between Oxygen Saturation of Patient and Severity Index of Covid 19 Pneumonia on CT”. Pakistan Journal of Medical & Health Sciences 16, no. 07 (July 30, 2022): 93. Accessed November 24, 2024. https://mail.pjmhsonline.com/index.php/pjmhs/article/view/1783.