Ratana – anekchai, Teeraporn, Patravoot Vatanasapt, and Thumnu Art-smart. 2013. “Laryngeal Cancer in Srinagarind Hospital”. Srinagarind Medical Journal 18 (1):16-20. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/14435.