Pregnancy outcome in patients with threatened abortion and abnormal early sonographic markers: A prospective study. International Journal of Biomedical and Advance Research, [S. l.], v. 6, n. 8, p. 580–583, 2015. DOI: 10.7439/ijbar.v6i8.2364. Disponível em: https://www.ssjournals.co.in/index.php/ijbar/article/view/2364. Acesso em: 5 may. 2026.