CHANGEDE, P. R. Comparison of injection drotaverine and injection valethamate bromide on duration and course of labor. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 5, n. 6, p. 1836–1842, 2017. DOI: 10.18203/2320-1770.ijrcog20161673. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/1221. Acesso em: 4 dec. 2025.