Singh, Sanjay, Akhileshwar Singh, and Shakti Vardhan. “A Case of Methotrexate Resistant Gestational Trophoblastic Neoplasia”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 7, no. 12 (November 26, 2018): 5178–5181. Accessed February 2, 2026. https://www.ijrcog.org/index.php/ijrcog/article/view/5680.