Tantinikorn, Weerachai, Paraya Assanasen, and Prayuth Tunsuriyawong. 2005. “Identification of High-Risk Tonsillectomy and Adenoidectomy”. Siriraj Medical Journal 57 (9):387-90. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/245613.