KUMARI, S.; CHAUDHARY, G. Correlation of levels of early second trimester beta-human chorionic gonadotropin levels with severity of preeclampsia. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 11, n. 12, p. 3340–3345, 2022. DOI: 10.18203/2320-1770.ijrcog20223127. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/12295. Acesso em: 2 oct. 2025.