FERNANDES, S. F.; CHANDRA, S. A study of risk factors for preterm labour. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 4, n. 5, p. 1306–1312, 2017. DOI: 10.18203/2320-1770.ijrcog20150701. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/2114. Acesso em: 2 nov. 2025.