Boonchuduang, Somrutai, Wipharat Juthasantikul, Amphan Chantarokorn, and Wirat Wasinwong. “Effects of Using Video Guided about Deep-Breathing Exercise for Patient Preparation before Receiving General Anesthesia”. Srinagarind Medical Journal 27, no. 2 (August 22, 2013): 139–146. Accessed May 8, 2024. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/11102.