Shazia Aftab, Saira Jamshed, Rabia Shahid, Farah Khan, Ayesha Khalid, Mehwish Zafar. “Comparison of Letrozole Vs Clomiphene in PCOS Ovulation Induction”. Pakistan Journal of Medical & Health Sciences, vol. 17, no. 11, Nov. 2023, p. 638, doi:10.53350/pjmhs020231711638.