1. Clinic for Endocrinology, Diabetes and Metabolic Disorders, Clinical Centre of Vojvodina, Novi Sad, Serbia
2. Medical Faculty, University of Novi Sad, Novi Sad, Serbia
3. Second Propaedeutic Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
4. Outpatient Department of Cardiometabolic Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
5. Second Department of Internal Medicine, European Interbalkan Medical Center, Thessaloniki, Greece
6. Diabetes Centre, Second Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis, Greece