Sahu, Mahija, and Nihar Ranjan Rout. 2020. “Comparative Study of Clomiphene Citrate Versus Letrozole As First-Line Ovulation Induction Drug in Infertile Polycystic Ovary Syndrome Women”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 9 (7):2948-52. https://doi.org/10.18203/2320-1770.ijrcog20202738.