KANNA, V.; HAKKIM, A.; KANAKASABAI, M.; GOVINDAN, S. A clinical study of the effectiveness of continuous epidural labour analgesia for vaginal delivery with 0.0625% bupivacaine with 0.0002% fentanyl. International Journal of Research in Medical Sciences, [S. l.], v. 3, n. 10, p. 2553–2560, 2017. DOI: 10.18203/2320-6012.ijrms20150789. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/1770. Acesso em: 13 oct. 2025.