Tiviraj, Supinya, Sungworn Ngudgratoke, and Thitima Chinachoti. 2016. “Development of Performance Skill Assessment for Open Airway with Bag Mask Ventilation by Nurse Anesthetist Students”. Thai Journal of Anesthesiology 39 (4):284-91. https://he02.tci-thaijo.org/index.php/anesthai/article/view/59446.