“43. EFFECT OF ANESTHESIA AND POSTOPERATIVE ANALGESIA WITH BUPIVACAINE COMBINED WITH MORPHINE IN SPINAL ANESTHESIA FOR LOWER LIMB SURGERY”. Vietnam Journal of Community Medicine, vol. 66, no. CĐ13- HNKH Gây mê Hồi sức, Sept. 2025, https://doi.org/10.52163/yhc.v66iCD13.3209.