KATRAWALA, S.; SHAH, U. J. Functional aspects of ultrasound screening during first trimester of pregnancy: emphasis on preventing bleeding and abortion. International Journal of Health and Clinical Research, [S. l.], v. 3, n. 7, p. 14–17, 2020. Disponível em: https://ijhcr.com/index.php/ijhcr/article/view/256. Acesso em: 3 jul. 2024.