1. Nuclear Medicine for Referring Physicians;Ziada,2004
2. Worldpopulationreview.com and Tradeingeonomics.com.
3. www://countrymeters.info/en/Kuwait.
4. A Concise Guide to Nuclear Medicine;Elgazzar,2011
5. Scintigraphic diagnosis of pulmonary embolism: Unraveling the confusion seven years after PIOPED;Elgazzar;Nucl Med Ann,1997