BILATERAL ERECTOR SPINAE PLANE BLOCK IN OPEN SPINAL FIXATION SURGERY: A COMPARATIVE STUDY OF SAFETY AND CLINICAL OUTCOMES. Macedonian J Anaesth [Internet]. 2026 Jul. 3 [cited 2026 Aug. 1];10(2):64-7. Available from: https://new.mja.mk/index.php/journal/article/view/129