Fida, Nadia M., and Haya Z. Kamfar. “Is Iron Deficiency Anemia a Risk Factor in Asthmatic Children?”. Journal of King Abdulaziz University - Medical Sciences 20, no. 1 (March 27, 2013): 3-14. Accessed April 1, 2020. http://jkaumedsci.org.sa/index.php/jkaumedsci/article/view/343.