P453Spatial distribution of atrial conduction block in patients with congenital heart disease. (20th June 2017) - Lanters, E A H; Teuwen, CP.; Yaksh, A.; Ramdjan, TTTK; Van Der Does, LJME; Knops, P.; Roos-Hesselink, JW.; Van De Woestijne, PC.; Bogers, AJJC; De Groot, NMS