Ramseena Ibrahim, Sanjeev Shivashankaran, Jesin Kumar, Ravindran Chetambath. “Recurrence and Malignant Transformation of Thymoma After 26 Years – A Rare Presentation”. The Indian Practitioner, Vol. 74, no. 1, Jan. 2021, pp. 22-25, https://articles.theindianpractitioner.com/index.php/tip/article/view/1109.