MBBS, Bushra Ashraf. Efficacy and safety of oral nifedipine with or without vaginal progesterone in the management of threatened preterm labor. International Journal of Reproductive BioMedicine (IJRM), [S. l.], v. 17, n. 9, p. 629–636, 2019. DOI: 10.18502/ijrm.v17i9.5098. Disponível em: https://knepublishing.com/index.php/ijrm/article/view/5098. Acesso em: 15 jul. 2025.