1. Division of Cardiology; Azienda Ospedaliera “G. Brotzu”, Via A. Ricchi 1 09134 Cagliari Italy
2. Division of Paediatrics; Ospedale “Crobu”, ASL 7 Carbonia Italy
3. Department of Imaging; Azienda Ospedaliera “G. Brotzu” Cagliari Italy
4. Department of Biomedical Science and Biotechnologies; Ospedale Regionale per le Microcitemie; ASL 8, Università degli Studi Cagliari Italy