Ravindran Chetambath, Jabeed Parengal, Muhammed Aslam, Sanjeev Shivashankaran, Amitha Sunny. “A Rare Case of Malignant Esophago-Pulmonary Fistula and Lung Suppuration”. The Indian Practitioner, Vol. 72, no. 6, June 2019, pp. 34-37, https://articles.theindianpractitioner.com/index.php/tip/article/view/269.