Pillai, Avani, Fessylouis T., Ramesh P., Parvathy T., and Aparna N. “Serum Estradiol Level on the Day of Ovulation Trigger and Pregnancy Outcomes in in-Vitro Fertilisation-Intracytoplasmic Sperm Injection Cycles”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 8, no. 10 (September 26, 2019): 3834–3840. Accessed December 4, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/7145.