S., Sneha, Sreelatha S., and Renuka Ramaiah. “Comparison of Placental Grading at Different Periods of Gestation in PIH Patients and Their Outcome”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 8, no. 12 (November 26, 2019): 4747–4750. Accessed October 13, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/7372.