AHMED, A.; ABOU GALALAH, A.; MAHGOUB, A.; MAHRAM, G. S. Comparative study between noninvasive ventilation with continuous positive airway pressure mask versus stacked breathing on chest expansion and pulmonary function in patients with pneumonia. Anaesthesia, Pain & Intensive Care, v. 25, n. 2, p. 176-184, 26 abr. 2021.