MALIK, J.; RAI, P.; DAS, A.; DAS, S. Pregnancy-associated plasma protein A - a level in first trimester and its impact on pregnancy outcome. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 5, n. 8, p. 2680–2683, 2017. DOI: 10.18203/2320-1770.ijrcog20162645. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/1491. Acesso em: 2 oct. 2025.