Chiewvit, P., Thapemongkol, K., Churojana, A., Chawalparit, O., & Suthipongchai, S. (2002). Value of Computed Tomography in T-Stage Assessment and Therapy of Nasopharyngeal Carcinoma. Siriraj Medical Journal, 54(1), 1–10. retrieved from https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/244990