Shazia Siddique, Amna Omer, Najam-Us-Sehar, Rabia Arshad, Khadeeja Muneeha, Qamar-Uz-Zaman. “Risk Factors Affecting Outcome in COVID 19 Patients Admitted in High Dependency Unit, Sir Ganga Ram Hospital Lahore”. Pakistan Journal of Medical & Health Sciences 16, no. 10 (December 6, 2022): 351. Accessed January 4, 2025. https://pjmhsonline.com/index.php/pjmhs/article/view/3092.