1. Department of Nephrology and Dialysis, L. Parodi—Delfino Hospital, 00034 Colleferro, Italy
2. Department of Clinical, Internal, Anesthesiologist and Cardiovascular Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161 Rome, Italy
3. Diabetology Unit, San Donato Hospital, 52100 Arezzo, Italy
4. International Renal Research Institute (IRRIV), S. Bortolo Hospital, 36100 Vicenza, Italy
5. Department of Medicine, Division of Nephrology, Ente Ospedaliero Cantonale, 6900 Lugano, Switzerland