1. Department “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
2. Cardiology Unit, Salerno University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, 84131 Salerno, Italy
3. Centro Medico Ascione Srl, 80059 Torre del Greco, Italy
4. Department of Medicine and Surgery, University of Naples “Federico II”, 80138 Napoli, Italy
5. Nephrology Unit, Salerno University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, 84131 Salerno, Italy