Kumari, Archana, and Vahini M. “Association Between Maternal Serum Beta Human Chorionic Gonadotropin Levels and Hypertensive Disorders of Pregnancy”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 9, no. 8 (July 23, 2020): 3157–3164. Accessed December 3, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/8739.