“A Comparative Study Between Hyperbaric Bupivacaine With Fentanyl and Hyperbaric Bupivacaine With Dexmedetomidine in Spinal Anesthesia for Lower Limb Orthopedic Surgery”. The Planet 5, no. 01 (September 20, 2021): 8. Accessed May 4, 2025. https://www.bdjournals.org/index.php/planet/article/view/8.