ASIF, Mohammad; WAGHAMORE, Neelavati; HUSSAIN, Anwar. A comparative study of intrathecal morphine and fentanyl as additives to of 0.5% hyperbaric bupivacaine in lower segment caesarean section: A prospective randomized double blind clinical trial. Journal of Neonatal Surgery, Lahore, Pakistan, v. 14, n. 30S, p. 864–876, 2025. Disponível em: https://jneonatalsurg.com/index.php/jns/article/view/7071. Acesso em: 15 apr. 2026.