Postoperative pain relief in children after subumbilical surgeries-a comparison between caudal bupivacaine and bupivacaine-clonidine. Mymensingh Medical Journal, [S. l.], v. 20, n. 1, p. 93–97, 2011. DOI: 10.3329/mmj.v20i1.8257. Disponível em: https://www.banglajol.info/index.php/MMJ/article/view/8257. Acesso em: 26 jun. 2026.