Siddique, MA, MA Sabur, SC Kundu, MG Mostafa, JA Khan, S Ahmed, MA Karim, and MA Hanif. “Difficulty in Diagnosis of Nasopharyngeal Carcinoma”. Mymensingh Medical Journal 21, no. 1 (November 8, 2012): 158–161. Accessed December 6, 2021. https://banglajol.info/index.php/MMJ/article/view/12531.