Liu, Dawei, Kun Chen, Yanfeng Yao, and Jingfei Sun. “A Randomized Controlled Trial of Bedside Ultrasound RUSH Process to Improve the Quality of Anesthesia for Elderly Emergency Surgery Patients”. Pakistan Journal of Medical Sciences 38, no. 6 (July 5, 2022). Accessed December 8, 2024. https://www.pjms.org.pk/index.php/pjms/article/view/5104.