“Efficacy and duration of analgesia with levobupivacaine combined with fentanyl or dexmedetomidine in lower extremity surgery: A meta-analysis”, Asian J Med Sci, vol. 16, no. 3, pp. 15–23, Mar. 2025, Accessed: Jul. 14, 2026. [Online]. Available: https://nepjol.info/index.php/AJMS/article/view/75362