MAO, M.; WANG, Z.; LI, C.; WANG, N.; FENG, S.; XU, S.; SHEN, X.; WANG, X. Effectiveness of A Single Dose of Epidural Morphine for Postpartum Perineal Pain: A Randomized Controlled Trial. Science Insights, [S. l.], v. 2017, n. 5, p. 1–6, 2017. DOI: 10.15354/si.17.ar062. Disponível em: https://bonoi.org/index.php/si/article/view/148. Acesso em: 21 apr. 2026.