1. Division of Endocrinology and Metabolism and Diabetes Centre, First Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, AHEPA University Hospital, Thessaloniki, Greece
2. Department of Internal Medicine, Faculty of Medicine, University of Ioannina, Ioannina, Greece
3. Infectious Diseases Division, First Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
4. Second Propedeutic Department of Internal Medicine, Hippokration General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece