Poudel, A., B. Bhattarai, N. P. . Gyawali, R. P. . Sah, and A. Rajak. “Endotracheal Tube Blockage in Tracheoesophageal Fistula: A Case Report”. Journal of Kathmandu Medical College, vol. 9, no. 4, Jan. 2021, pp. 224-7, https://jkmc.com.np/ojs3/index.php/journal/article/view/935.