Wenxing Wang, and Wenyuan Sun. “An Empirical Study on Patient Queuing After Medical Staff Supporting Disaster Areas in Northwest China”. International Journal of Engineering and Management Research 10, no. 3 (June 30, 2020): 159-164. Accessed May 15, 2021. https://www.ijemr.net/ojs/index.php/ojs/article/view/520.