Shareef, Layth R., and Kasim M. AL- Doori. “The Value of the Chest X-Ray for Diagnosing Left Ventricular Dysfunction”. Journal of the Faculty of Medicine Baghdad, vol. 51, no. 1, Apr. 2009, pp. 23-26, https://doi.org/10.32007/jfacmedbagdad.5111161.