Comparative Analysis of Oral Nifedipine Versus Oral Progesterone Alone in the Treatment of Threatened Preterm Labor. Medical Forum Monthly, [S. l.], v. 32, n. 5, 2021. Disponível em: https://medicalforummonthly.com/index.php/mfm/article/view/1730.. Acesso em: 18 may. 2026.