Khakwani, Mehnaz, Rashida Parveen, Shazia Yousaf, and Ayesha Uzaima Tareen. “Efficacy of Letrozole Versus Clomiphene Citrate on Ovulation Induction in Patients With Polycystic Ovarian Syndrome”. Pakistan Journal of Medical Sciences 38, no. 5 (May 17, 2022). Accessed March 28, 2024. https://pjms.org.pk/index.php/pjms/article/view/5565.