NGUYEN, T. H. T.; VU, V. T.; NGUYEN, V. Q. H. Prevention of preterm birth among singleton pregnant women with an obtuse uterocervical angle: a quasi-experimental study on the value of cervical pessary combined with progesterone. Tạp chí Y Dược Huế, [S. l.], v. 15, n. 4, p. 139–147, 2025. DOI: 10.34071/jmp.2025.4.18. Disponível em: https://huejmp.vn/index.php/journal/article/view/653. Acesso em: 21 tháng 9. 2025.