Zangana, Aso H., and Haitham I. Bahoo Al – Banna. “Trend of Deaths Due to Circulatory System in Erbil City Between 2007 to 2011”. Journal of the Faculty of Medicine Baghdad, vol. 58, no. 4, Jan. 2016, pp. 361-5, https://doi.org/10.32007/jfacmedbagdad.584286.