MORPHOLOGICAL CHANGES OF THE CERVIX IN PREGNANT WOMEN WITH HIGH RISK OF PRETERM BIRTH BEFORE 34 WEEKS AT HANOI OBSTETRICS & GYNECOLOGY HOSPITAL. YHCĐ [Internet]. 2026 Jan. 27 [cited 2026 Sept. 9];67(CD1). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/4228