Ali, S., A. Khatri, N. Ghouri, S. Mukhtar, S. Zawawi, and S. G. Saleem. “Combining Non-Invasive Ventilation With Timed Position Change in the Emergency Department to Improve Oxygenation and Outcomes in Patients With COVID-19: A prospective Analysis from a Low Resource Setup”. Pakistan Journal of Medical Sciences, Vol. 38, no. ICON-2022, Dec. 2021, doi:10.12669/pjms.38.ICON-2022.5772.