Dusitkasem, Sasima, and Wilaiwan Sirisatjawat. “Ketamine Lubrication of Endotracheal Tubes for Attenuating Postoperative Sore Throat: a Randomized, Double-Blind Study”. Thai Journal of Anesthesiology 49, no. 4 (July 1, 2023): 223–230. accessed September 20, 2026. https://he02.tci-thaijo.org/index.php/anesthai/article/view/263956.