1. Unit of Endocrinology, Diabetes, and Metabolism (I.G., A.D.F., F.P., I.M., D.Y., S.F.), 00186 Rome, Italy
2. Department of Systems Medicine (I.G., A.D.F., F.P., I.M., D.Y., D.L., S.F.), University of Rome Tor Vergata, 00133 Rome, Italy
3. Department of Neurology (P.Pal., F.P.), 00186 Rome, Italy
4. Department of Neurology (P.Pal., R.A., F.V.), Campus Bio-Medico University, 00128 Rome, Italy
5. Fatebenefratelli Association for Research Unit of Internal Medicine (S.D., P.Pas.), 00186 Rome, Italy
6. Service of Medical Statistics and Information Technology (S.D., P.Pas.), S. Giovanni Calibita Fatebenefratelli Hospital, 00186 Rome, Italy
7. Unit of Health Management (S.D.), Ministry of Health, Viale Giorgio Ribotta 5, 00144 Rome, Italy