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Comparison Between Epidural Postoperative Analgesia With Bupivacaine With 50mg Magnesium Sulphate and of Bupivacaine With 50mg Tramadol for Patients Undergoing Lower Limb Surgeries. PMJUA 2025, 10 (3-4), 48-60. https://doi.org/10.31636/pmjua.v10i3-4.5.