A. Poudel, B. Bhattarai, N. P. . Gyawali, R. P. . Sah, and A. Rajak, “Endotracheal tube blockage in tracheoesophageal fistula: A case report”, J. Kathmandu Med. Coll., vol. 9, no. 4, pp. 224–227, Jan. 2021.