KHANAM, R.; NATH, P. Role of transvaginal sonography in the diagnosis of early pregnancy failure. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 10, n. 2, p. 662–668, 2021. DOI: 10.18203/2320-1770.ijrcog20210324. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/9611. Acesso em: 15 feb. 2025.