Jaiswal, P., S. Shrestha, Y. Dwa, and S. Manandhar. “Correlation of Ultrasound Imaging With Histopathological Findings in Gestational Trophoblastic Disease”. Journal of Patan Academy of Health Sciences, vol. 7, no. 3, Dec. 2020, pp. 41-46, doi:10.3126/jpahs.v7i3.33824.