1. Diabetes and Endocrine Department, South Warwickshire National Health Service Foundation Trust, Warwick, Warwickshire, UK;
2. Second Propedeutical Department of Surgery, Hippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece;
3. Department of Pathology, Hippokration Hospital, Thessaloniki, Greece;
4. Adult Thalassemia Unit, Second Department of Internal Medicine, Hippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece;
5. Fourth Department of Internal Medicine, Hippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece;
6. Public Health and Social Care, Kavala, Greece