Mahdi, Mudhaffar B., et al. “Sixty-Four Multi-Slice Cerebral CT Angiographic Findings in Early Non-Traumatic Subarachnoid Hemorrhage”. Journal of the Faculty of Medicine Baghdad, vol. 56, no. 2, July 2014, pp. 151-6, https://doi.org/10.32007/jfacmedbagdad.562456.