ELAMARAN, E.; DANIEL, S.; A. N., R. G. A prospective study to evaluate the efficacy of 11-13+6 weeks anatomy scan in detecting fetal structural anomalies compared to traditional 18-22 weeks scan. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 6, n. 6, p. 2431–2437, 2017. DOI: 10.18203/2320-1770.ijrcog20172326. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/2648. Acesso em: 4 oct. 2025.