Wangthanakorn, S. “Factor Related to Severe Deep Neck Infections: Retrospective Study in Udonthani”. Thai Journal of Otolaryngology Head and Neck Surgery, vol. 22, no. 1, Nov. 2021, pp. 3-19, https://he02.tci-thaijo.org/index.php/rcotJ/article/view/249013.