Seife Teferi, Muhdin Abdo, and Getachew Abebe. 2016. “Optimization of Radiological Doses to Patients Undergoing Intravenous Urography Examinations in Addis Ababa, Ethiopia”. The Ethiopian Journal of Health Development 28 (3). https://ejhd.org/index.php/ejhd/article/view/3358.