%0 Letter %T Retrieval of malpositioned Atrial Septal Occluder (ASO) devices: call for guidelines. %A Varadharajan R %A Parida S %A Badhe A %J Pediatr Cardiol %V 36 %N 4 %D Apr 2015 %M 25645098 %F 1.838 %R 10.1007/s00246-015-1124-6 %X