Comparison of the Ultrasonic Evaluation of Bi-Parietal Diameter and Femoral Length in 2nd and 3rd Trimester to Estimate the Gestational Age. Bangladesh Med J [Internet]. 2021 Aug. 9 [cited 2026 Jun. 29];49(3):43-8. Available from: https://banglajol.info/index.php/BMJ/article/view/56080