Jain, S., Dahiya, P., Yadav, J. and Jain, N. 2018. A comparative study of efficacy of letrozole and clomiphene citrate for ovulation induction. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 7, 10 (Sep. 2018), 4133–4138. DOI:https://doi.org/10.18203/2320-1770.ijrcog20184141.