Cervical Length and Progesterone: Contribution of Ultrasonography to Decide to Whom Administer the Progesterone. Global Journal of Medical Research, [S. l.], v. 14, n. 19, p. 27–34, 2014. Disponível em: https://medicalresearchjournal.org/index.php/GJMR/article/view/. Acesso em: 23 oct. 2026.