1. Second Propedeutic Department of Internal Medicine, Hippokration General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. Clinic for Endocrinology, Diabetes and Metabolic Disorders, Clinical Centre of Vojvodina, University of Novi Sad, Novi Sad, Serbia
3. Medical Faculty, University of Novi Sad, Novi Sad, Serbia
4. Third Department of Cardiology, Hippokration General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
5. Second Propedeutic Department of Internal Medicine, Hippokration General Hospital, Gastroenterology and Hepatology Division, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece