Allanki, Suneetha, Neethi Mala Mekala, and Sunethri Padma. “Giant Chorioangioma of Placenta: A Rare Placental Cause of Polyhydramnios”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 8, no. 1 (December 26, 2018): 321–324. Accessed October 27, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/5769.