Cervicovaginal Beta-hCG as a Diagnostic Biomarker for Prediction of Preterm Labor and its Co-relation with Cervical Length in Transvaginal Sonography. Annals of Medicine and Medical Sciences, [S. l.], p. 786–792, 2025. DOI: 10.5281/. Disponível em: http://ammspub.com/index.php/amms/article/view/263. Acesso em: 15 aug. 2025.