1. Department of Endocrinology, Clinical Hospital Center Osijek, 31000 Osijek, Croatia
2. Department of Pathophysiology, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
3. Department of Internal Medicine and History of Medicine, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
4. Department of Medicine of Sports and Exercise, Faculty of Kinesiology, University of Zagreb, 10000 Zagreb, Croatia
5. University Clinic for Diabetes Vuk Vrhovac, 10000 Zagreb, Croatia
6. School of Medicine, Catholic University of Croatia, 10000 Zagreb, Croatia
7. Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
8. Department of Internal Medicine, County Hospital Čakovec, 40000 Čakovec, Croatia
9. Department of Pharmacology, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Josipa Huttlera 4, 31000 Osijek, Croatia