Sriyanaluk, Bussarin, Niranuch Siripunt, and Maliwan Oofuvong. “Effectiveness of Artificial Cheeks for Bag Mask Ventilation in Elderly Patients Receiving General Anesthesia”. Srinagarind Medical Journal 34, no. 5 (September 23, 2019): 578–563. Accessed April 29, 2024. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/225133.