N., A.; Z., S.; A., S.; H., H.; A., A. H. Effect of vaginal progesterone in combination with cervical cerclage on improved gestational age and perinatal outcome in twin pregnancy: A prospective randomized study. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 6, n. 8, p. 3224–3229, 2017. DOI: 10.18203/2320-1770.ijrcog20173442. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/2988. Acesso em: 29 dec. 2025.