MAHAMMAD, S. B.; SUNKIREDDY, N.; M., J. Transvaginal sonographic cervical length during mid-trimester in predicting preterm labour in asymptomatic singleton pregnancies. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 12, n. 4, p. 931–933, 2023. DOI: 10.18203/2320-1770.ijrcog20230789. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/12586. Acesso em: 27 oct. 2025.