H. A.-W. M. Abdullah, S. M. Alhammash, A. K. Kuraidi, I. Victor, and M. H. AI-Quraishi, “Non Surgical Closure of Secundum Atrial Septal Defect by Percutaneous Transcatheter Amplatzer Septal Occluder”, J Fac Med Baghdad, vol. 50, no. 1, pp. 20–30, Apr. 2008, doi: 10.32007/jfacmedbagdad.5011297.