Nontasila, S., S. Kamsa-ard, R. Amphaiphan, N. R. Noisuwan, and T. Ratanawilaisak. “Survival Rate of Oral Cancer Patients After Diagnosis in Buriram Hospital, Buriram Province”. Srinagarind Medical Journal, vol. 35, no. 6, Oct. 2020, pp. 753-9, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/247352.