AGARWAL, M. K.; MISHRA, J. Epidural block with Bupivacaine with or without Ketamine: A comparative assessment of clinical efficacy. International Journal of Health and Clinical Research, [S. l.], v. 3, n. 9, p. 194–198, 2020. Disponível em: https://ijhcr.com/index.php/ijhcr/article/view/374. Acesso em: 23 feb. 2025.