Abdullah, H.A.-W.M. et al. 2008. Non Surgical Closure of Secundum Atrial Septal Defect by Percutaneous Transcatheter Amplatzer Septal Occluder. Journal of the Faculty of Medicine Baghdad. 50, 1 (Apr. 2008), 20–30. DOI:https://doi.org/10.32007/jfacmedbagdad.5011297.