“33. REVIEW OF THE PREDICTIVE VALUE OF CERVICAL LENGTH AND CERVICAL ANGLE ON ULTRASOUND FROM WEEK 22-28 IN SINGLE PREGNANT WOMEN AT NINH BINH OBSTETRICS AND PEDIATRIC HOSPITAL IN 2024”. Vietnam Journal of Community Medicine 66, no. CĐ6-HNKH Bệnh viện Sản nhi Nghệ An (May 31, 2025). Accessed September 9, 2026. https://tapchiyhcd.vn/index.php/yhcd/article/view/2299.