MATHEW, S. M.; KUMAR, A. A prospective analysis of the risk factors and the perinatal outcome of preterm labour. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 7, n. 12, p. 4833–4839, 2018. DOI: 10.18203/2320-1770.ijrcog20184924. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/5815. Acesso em: 27 oct. 2025.