1. Diabetes Centre of the Division of Endocrinology, Diabetes and Metabolism, First Department of Pediatrics, National and Kapodistrian University of Athens, “Aghia Sophia” Children’s Hospital, Athens, Greece;
2. Department of Endocrinology, Department of Medical and Health Sciences, Linkoping University, Linkoping, Sweden;
3. Department of Rheumatology, “Henri Dunant” Hospital, Athens, Greece;
4. Department of Clinical Biochemistry, “Aghia Sophia” Children’s Hospital, Athens, Greece