NASUTION, A. N.; NAPITUPULU, B.; ARDINI, T. W.; PURBA, J. W.; ANDRA, C. A.; LUBIS, A. C.; SIREGAR, A. A. Non - Fluoroscopic Transesophageal Echocardiography Guided Transcatheter Closure of Atrial Septal Defects: Single Centre Experience in The North of Sumatra Island, Indonesia. Indonesian Journal of Cardiology, v. 47, n. 1, 31 mar. 2026.