Clinical Impact of Residual Shunts after Septal Defect Closure: Do Small Residual Defects under 2 mm Really Matter? - Schaefer, H.; Sheytanov, V.; Narr, A.; Liebrich, M.; Hummel, S.; Beridze, T.; Roehl, T.; Schweigmann, U.; Nossal, R.; Ocker, V.; Uhlemann, F.; Seeburger, J.; Tzanavaros, I. (The Thoracic and Cardiovascular Surgeon, 2021)