A. Sengul, I. Basyigit, H. Boyaci, F. Yildiz, and A. Ilgazli, “Comparison of Pressure Support Ventilation and Proportional Assist Ventilation Modes in Chronic Obstructive Pulmonary Disease Exacerbation ”, annalsmedres, vol. 20, no. 3, pp. 0196–0201, May 2021.