1 Pediatric and Congenital Cardiac Surgery Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy.
2 Institute of Radiology, Department of Medicine, University of Padua, Padua, Italy.
3 Pediatric Cardiology Unit, Department of Children and Woman's Health, University of Padua, Padua, Italy.
4 Pediatric and Congenital Cardiac Surgery Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy. vladimiro.vida@unipd.it.