Khan, Arif Raza, Mohib Ullah Khan, Saeed Ullah, Hidayat Ullah, and Javed Shah. “Nasopharyngeal Carcinoma Study of 20 Cases”. Journal of Postgraduate Medical Institute 13, no. 2 (September 12, 2011). Accessed April 19, 2024. https://jpmi.org.pk/index.php/jpmi/article/view/658.