Pham, Van Nam, and Van Hien Vo. “Obturator Anesthesia under Ultrasound-Guided Combined With Spinal Anesthesia for Endoscopic Removal of Bladder Tumor”. Journal of Disaster Medicine and Burn Injuries, no. 3, June 2024, pp. 13-19, doi:10.54804/yhthvb.3.2024.326.