“Prediction of Preterm Birth by Second Trimester Transvaginal Ultrasound Measurement of Cervical Length. A Prospective Observational Study at a Tertiary Care Hospital”. Life and Science 6, no. 2 (April 7, 2025): 07. Accessed October 17, 2026. https://lifenscience.org/index.php/life-and-science/article/view/850.