Intrathecal versus epidural morphine for analgesia following excisional haemorrhoidectomy: a comparative analysis. Port Harcourt Medical Journal, [S. l.], v. 19, n. 1, p. 29–35, 2025. DOI: 10.60787/phmj.v19i1.189. Disponível em: https://phmj.org.ng/index.php/home/article/view/189. Acesso em: 5 jun. 2025.