Jain S, Dahiya P, Yadav J, Jain N. A comparative study of efficacy of letrozole and clomiphene citrate for ovulation induction. Int J Reprod Contracept Obstet Gynecol [Internet]. 2018 Sep. 26 [cited 2025 Oct. 2];7(10):4133-8. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/5404