Yadav, M. K., A. . Pal, C. Pant, and M. D. . Bhattarai. “Application of DOPS Checklists in Assessing the Skills of Emergency Bag Mask Ventilation and Endotracheal Tube Intubation”. Nepal Medical Journal, vol. 4, no. 1, Oct. 2021, pp. 68-74, https://nmj.com.np/nmj/index.php/nmj/article/view/21.