1. Department of Endocrinology and Diabetes Center; ‘G Gennimatas’ General Hospital; Athens Greece
2. Department of Hygiene, Epidemiology and Medical Statistics; National and Kapodistrian University of Athens Medical School; Athens Greece
3. Department of Radiology; ‘G Gennimatas’ General Hospital; Athens Greece
4. Third Department of Surgery; ‘G Gennimatas’ General Hospital; Athens Greece
5. Department of Pathophysiology; Laikon Hospital; National and Kapodistrian University of Athens Medical School; Athens Greece
6. First Department of Pediatrics; Children's Hospital ‘Aghia Sophia’; National and Kapodistrian University of Athens Medical School; Athens Greece