1. Department of Cardiovascular and Thoracic Sciences (R.L., F.G., F.B., G.L., C.A., E.R., M.G., E.P., R.S., F.I., M.M., C.T.) Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
2. Catholic University of the Sacred Heart, Rome, Italy (R.L., F.B., A.B.D., E.P., R.S., M.M., C.T.).
3. Department of Pediatrics, Pediatric Cardiology Unit (A.B.D.) Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
4. Institute of Radiology (G.S.) Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.