ULTRASONOGRAPHIC EVALUATION OF CERVICAL LENGTH, CERVICAL VOLUME AND CERVICAL VASCULARIZATION BETWEEN 18 AND 40 WEEKS OF GESTATION
มหาวิทยาลัยมหิดล พ.ศ. 2559
Correlation between transperineal and transvaginal sonography in cervical length measurement among normal thai pregnant women at 16 to 24 weeks of gestation