Nguyen Thi Thuy, Le Sau Nguyen, & Dao Thu Trang. (2024). Combined saphenous nerve block and sciatic nerve block under the guidance of ultrasound for lower extremity amputation in high-risk patients. Journal of Clinical Medicine Hue Central Hospital, 16(7), 38–43. https://doi.org/10.38103/jcmhch.16.7.6