1. Department of Endocrinology & Diabetology, Faculty of Medicine and Psychology, Sapienza University, Rome, Italy.
2. Department of Endocrinology & Diabetology, District No. 63, Azienda Sanitaria Locale, Salerno, Italy.
3. Diabetologic Department, Azienda Sanitaria Locale RME, Rome, Italy.
4. Diabetologic Unit, Department of Clinical and Molecular Medicine, S. Pertini Hospital, Rome, Italy.