Chongvisal, Samut. “Ear and Hearing School Survey for Hearing Impair Prevalence in the Southern Part of Thailand 2011”. Siriraj Medical Journal 65, no. 2 (August 5, 2016): 51–54. Accessed April 16, 2024. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/64189.