Nasution, A. N., Napitupulu, B., Ardini, T. W., Purba, J. W., Andra, C. A., Lubis, A. C. and Siregar, A. A. (2026) “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, 47(1). doi: 10.30701/ijc.1985.