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Comparison of Bupivacaine Hydrochloride and Bupivacaine Hydrochloride with Tramadol Hydrochloride in Caudal Epidural Analgesia in Children Undergoing Infraumbilical Surgeries. AMMS [Internet]. 2025 Aug. 5 [cited 2026 Feb. 13];:800-3. Available from: https://ammspub.com/index.php/amms/article/view/289