Kim, B. J. ., J. Song, J. . Huh, and I.-S. Kang. “Outcomes After Transcatheter Closure of Atrial Septal Defect Without Using a Balloon-Sizing Technique: A Randomized Controlled Comparison With Closures Using a Balloon-Sizing Technique: ASD Device Closure Without Balloon Sizing”. The Heart Surgery Forum, vol. 25, no. 2, Apr. 2022, pp. E288-E293, doi:10.1532/hsf.4571.