1.
Linh Đỗ P, Tú NH. Evaluation of ultrasound-assisted thoracic epidural anesthesia in reducing postoperative pain in patients undergoing upper abdominal surgery: A randomized controlled trial. TCNCYH [Internet]. 2021May31 [cited 2026Nov.7];138(2):140-7. Available from: https://tapchinghiencuuyhoc.vn/index.php/tcncyh/article/view/88