Qayyum, U., N. Akhtar, S. Nisar, A. Qayyum, A. Hussain, and A. Kashif. “Effect of Prone Positioning As Modality for Improvement in Bedside Oxygen Saturation in Awake Non-Intubated COVID-19 Patients and Its Relationship With High Resolution CT Chest Severity Score”. Pakistan Armed Forces Medical Journal, Vol. 72, no. 1, Mar. 2022, pp. 223-26, doi:10.51253/pafmj.v72i1.5920.