Yusuf, L. et al. 2013. Efficacy of Clomiphene Citrate and Letrozole in Induction of Ovulation in Patients of PCOS: A Randomized Prospective Clinical Trial. Annals of King Edward Medical University. 18, 2 (May 2013), 133. DOI:https://doi.org/10.21649/akemu.v18i2.389.