NAIR, V. V.; NAIR, S. S.; K., R. Study of placental location and pregnancy outcome. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 8, n. 4, p. 1393–1397, 2019. DOI: 10.18203/2320-1770.ijrcog20191187. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/6235. Acesso em: 13 oct. 2025.