1. Department of Internal Medicine and Therapeutics; University of Pavia; Pavia
2. Aging and Kidney diseases; ‘G. Descovich’ Atherosclerosis Study Center; University of Bologna; Bologna
3. Metabolic Unit; Regional Hospital; Varese
4. Ospedale Pesenti Fenaroli; Alzano Lombardo; Bergamo; Italy
5. Hospital Center of Diabetes; Sant'Angelo Lodigiano; Lodi; Italy
6. Ospedale della Carità; Casalbuttano; Cremona; Italy