Dlawer Abdulhammed Ahmad. “Estimation of Serum Electrolyte Concentration Among Fuel pump/Petrol Station Workers in Kirkuk City”. International Journal of Research in Pharmaceutical Sciences 10, no. 4 (July 12, 2019): 2602-2606. Accessed December 6, 2019. https://pharmascope.org/index.php/ijrps/article/view/1401.