“Accuracy of Ultrasonography for Gestational Age Estimation Compared With Last Menstrual Period: A Cross-Sectional Study: Https: doi.org 10.5281 Zenodo.18210578”. 2026. Pakistan Journal of Medical & Cardiological Review 4 (4): 2422-28. https://pakjmcr.com/index.php/1/article/view/463.