1. Department of Cardiology, Hospital “F. Perinei”, Altamura, Italy;
2. Section of Cardiovascular Diseases, Department of Emergency and Organ Transplantation, School of Medicine, University of Bari, Bari, Italy;
3. Department of Cardiology, Castellaneta Hospital, Taranto, Italy;
4. Department of Cardiac Surgery, Mater Dei Hospital, Bari, Italy;
5. Department of Biomedical Sciences and Human Oncology – Paediatric Unit, Policlinico Hospital, Bari, Italy