Theocharis Koufakis1, Kalliopi Kotsa2. 1. Division of Endocrinology and Metabolism and Diabetes Centre, First Department of Internal Medicine, Medical School, AHEPA University Hospital, Aristotle University of Thessaloniki, 1 St. Kiriakidi Street, 54636, Thessaloniki, Greece. 2. Division of Endocrinology and Metabolism and Diabetes Centre, First Department of Internal Medicine, Medical School, AHEPA University Hospital, Aristotle University of Thessaloniki, 1 St. Kiriakidi Street, 54636, Thessaloniki, Greece. kalmanthou@yahoo.gr.