Muhammadamin, Kamaran Y., Omeed O. Darweesh, and Muhammad A. Alshawni. 2011. “Evaluation of Testosterone Hormone and Zinc Levels Among Infertile Males in Kirkuk Province/ Iraq”. Zanco Journal of Medical Sciences (Zanco J Med Sci) 15 (2):34-39. https://doi.org/10.15218/zjms.2011.018.