1. Division of Endocrinology and Metabolism, First Department of Internal Medicine, Medical School, AHEPA University Hospital, Aristotle University of Thessaloniki, 1 St. Kiriakidi Street, 54636 Thessaloniki, Greece
2. Second Propaedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, 54642 Thessaloniki, Greece
3. Clinic for Endocrinology, Diabetes and Metabolic Disorders, Clinical Center of Vojvodina, 21000 Novi Sad, Serbia
4. Medical Faculty, University of Novi Sad, 21000 Novi Sad, Serbia
5. Department of Dietetics and Nutrition, AHEPA University Hospital, 54636 Thessaloniki, Greece
6. Laboratory of Biochemistry, AHEPA General Hospital, School of Medicine, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece