1. Paediatric Cardiology Department, Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London SW3 5NP, UK
2. Cardiovascular Sciences Department, AOU “Ospedali Riuniti”, 60126 Ancona, Italy
3. Nuclear Medicine Unit, St. Salvatore Hospital, 67100 L’Aquila, Italy
4. Department of Cardiac Surgery, Cardiology, Heart and Lung Transplantation, Bambino Gesù Children’s Hospital IRCCS, 00165 Rome, Italy
5. Department of Medical and Surgical Sciences, Magna Grecia University, 88100 Catanzaro, Italy
6. Cardiac Magnetic Resonance Department, Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London SW3 5NP, UK
7. School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and Medicine, King’s College University, London SW7 2BX, UK
8. Department of Cardiology and CardioLab, University of Rome Tor Vergata, 00133 Rome, Italy