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Predicting Preterm Birth Through Serial Transvaginal Cervical Length Measurements At 11–14 And 18–20 Weeks: A Prospective Observational Study In A Tertiary Care Center. Int. J. Environ. Sci. [Internet]. 2025 Jun. 18 [cited 2025 Sep. 27];11(12s):1654-8. Available from: https://theaspd.com/index.php/ijes/article/view/3064