1.
Moungmaithong S. Ultrasonographic Evaluation of Cervical Length, Cervical Volume and Cervical Vascularization between 18 and 40 Weeks of Gestation. Siriraj Med J [Internet]. 2016 Oct. 20 [cited 2024 May 3];68(5):299-304. Available from: https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/69330