Comparison of Levobupivacaine and Levobupivacaine with Fentanyl in Ultrasound-Guided Popliteal Block for Below-Knee Surgeries: A Randomized Clinical Trial. - Snehitha, K. N. S.; S. D., Pratibha; Holyachi, Renuka; L. K., Shivanand; Alalamath, Santosh (European Journal of Cardiovascular Medicine, 2026)