Prakash A, Lacro RV, Sleeper LA, Minich LL, Colan SD, McCrindle B, Covitz W, Golding F, Hlavacek AM, Levine JC, Cohen MS. Challenges in echocardiographic assessment of mitral regurgitation in children after repair of atrioventricular septal defect. Pediatr Cardiol. 2012 Feb; 33(2):205-14.