Joseph, Veena Mariam, et al. “Tracheal Diverticulum in SARS-CoV-2 Patients on Non-Invasive Ventilation A Not so ‘Spontaneous’ Cause of Pneumomediastinum? An Imaging Pictorial Presentation of Two Cases With Review of Literature”. Acta Medica Lituanica, vol. 28, no. 2, Dec. 2021, pp. 302-7, https://doi.org/10.15388/Amed.2021.28.2.19.