BHATIA, S.; SHAH, M. A retrospective study of umbilical artery S/D ratio assessment on color doppler for monitoring of fetal well-being in patients with intrauterine growth retardation and its correlation with perinatal outcomes. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 13, n. 1, p. 139–144, 2023. DOI: 10.18203/2320-1770.ijrcog20234093. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/13709. Acesso em: 28 oct. 2025.