Zeba, D., R. Biswas, K. Fatema, M. A. Khair, F. Zesmin, and J. Sharifa. “Letrozole or Clomiphene Citrate for Induction of Ovulation in Patients With Polycystic Ovarian Syndrome: A Prospective Randomized Trial”. Faridpur Medical College Journal, vol. 13, no. 2, Oct. 2019, pp. 78-81, doi:10.3329/fmcj.v13i2.43641.