Alam, Urooj Kanwal, Shazia Kadri, Naveed Ahmed, Mukhtiar A Memon, and Tariq Mehmood. “Chest X-Ray (First Tool of Imaging) in COVID-19 Patients Radiological and Clinical Correlation - A Tertiary Care Experience at Jinnah Postgraduate Medical Centre, Karachi”. Pakistan Journal of Medical Research 60, no. 3 (October 25, 2021): 104-110. Accessed December 7, 2021. https://pjmr.org.pk/index.php/pjmr/article/view/140.