PRIYADARSHANI, P.; KAUR, G. Predicting preterm labour by cervical length measurement. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 5, n. 6, p. 1809–1813, 2017. DOI: 10.18203/2320-1770.ijrcog20161667. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/1214. Acesso em: 4 dec. 2025.