1. Paediatric Cardiology Unit University of Campania “Luigi Vanvitelli” A.O.R.N. “Ospedali dei Colli” Naples Italy
2. Paediatric Cardiology and GUCH Unit Heart Hospital “G. Pasquinucci” National Research Council‐Tuscany Foundation “G. Monasterio” Massa Italy
3. Invasive Cardiology Unit University of Campania “Luigi Vanvitelli” A.O.R.N. “Ospedali dei Colli” Naples Italy