“CHARACTERISTICS AND THE EFFECTIVENESS OF ANTENATAL SCREENING FOR CHRONMOSOMAL ABNORMALITIES IN HIGH-RICK PREGNANT WOMAN IN NGHE AN (2020 – 2021)”. Vietnam Journal of Community Medicine 62, no. 7 (2021) (December 9, 2021). Accessed September 9, 2026. https://tapchiyhcd.vn/index.php/yhcd/article/view/240.