Ahmad, Naseer, Ihsan Ullah, Muhammad Javaid, and Muhammad Habib Khattak. “BEAD IN TRACHEOBRONCHIAL TREE: A THERAPEUTIC CHALLENGE”. Journal of Postgraduate Medical Institute 20, no. 3 (August 12, 2011). Accessed November 22, 2024. https://jpmi.org.pk/index.php/jpmi/article/view/224.