ALAM, U. K.; KADRI, S.; AHMED, N.; MEMON, M. A.; MEHMOOD, T. 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, v. 60, n. 3, p. 104-110, 25 Oct. 2021.