ASTHA; DIVYA. Serum magnesium level at 24 to less than 37 weeks: a prospective COHORT study predicting spontaneous preterm delivery. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 12, n. 11, p. 3347–3352, 2023. DOI: 10.18203/2320-1770.ijrcog20233307. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/13547. Acesso em: 28 oct. 2025.