Dhanalakshmi G.; Sumathi P.; Pasupathy P. Comparison of the Efficacy of Follicular and Endometrial Response on Metformin – Clomophene Citrate and Metformin – Letrozole on Polycystic Ovarian Syndrome Women. Int. J. Res. Pharm. Sci. 2012, 3, 127-134.