A comparative study of low-dose intrathecal bupivacaine 0.5% (heavy), levobupivacaine 0.5% (plain), and levobupivacaine 0.5% (heavy) with fentanyl as an adjuvant in transurethral resection of prostate surgery: A prospective randomized study. Asian J Med Sci. 2024;15(9):21-27. doi:10.3126/ajms.v15i9.67682