1. Unit of Internal Medicine, San Francesco Hospital, Viale Europa 21, 82037 Telese Terme, BN, Italy
2. Section of Cardiovascular Diseases, Department of Emergency and Organ Transplantation, University of Bari, School of Medicine, Bari, Italy
3. Cardiology Unit, Hospital ‘F. Perinei’ Altamura, Bari, Italy
4. Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, L’Aquila, Italy