YADAV, K.; OJHA, P.; CHOPRA, A. Comparison of maternal serum CA-125 and ultrasonography findings as a prognostic marker in threatened abortion. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 10, n. 6, p. 2253–2258, 2021. DOI: 10.18203/2320-1770.ijrcog20212157. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/10134. Acesso em: 7 nov. 2025.