Comparison of Bupivacaine Hydrochloride and Bupivacaine Hydrochloride with Tramadol Hydrochloride in Caudal Epidural Analgesia in Children Undergoing Infraumbilical Surgeries. Annals of Medicine and Medical Sciences, [S. l.], p. 800–803, 2025. Disponível em: http://ammspub.com/index.php/amms/article/view/289. Acesso em: 29 sep. 2025.