1. Department of Endocrinology, 424 General Military Hospital, Thessaloniki, Greece
2. Department of Cardiology, 424 General Military Hospital, Thessaloniki, Greece
3. Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
4. Section of Endocrinology, Boston VA Healthcare System, Harvard Medical School, Boston, MA, USA
5. Department of Hygiene and Epidemiology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
6. First Department of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece