Shiku, D., Stijns, M., & Vliers, A. (1981). [Atrioventricular-conduction and Right Atrial Volume in Children Before and After Closure of Atrial Septal-defect]. Archives des Maladies du Coeur et des Vaisseaux, 74(3), 357-361. https://hdl.handle.net/2078.5/71703 (Original work published 1981)