Al-Zubaidi, U. I. M. ., & Fakhrildin, M.-B. M.-R. . (2011). Influence of different concentrations of Sildenafil Citrate on histological parameters of mice epididymis. Journal of Biotechnology Research Center, 5(2), 55–60. https://doi.org/10.24126/jobrc.2011.5.2.165