Yadav, R., Kumar Verma, A., Malhotra, V. and Chavhan, R. (2019) “Placental thickness measurement by ultrasonography and it’s correlation with gestational age in normal and intrauterine growth retarded pregnancy”, Tropical Journal of Radiology and Imaging of Siddharth Health Research and Social Welfare Society, 1(1), pp. 27-32. Available at: https://radiology.medresearch.in/index.php/tjri/article/view/7 (Accessed: 21June2021).