1. Department of Human Pathology in Adult and Developmental Age “Gaetano Barresi,” University of Messina, Messina, Italy.
2. Department of Economics, Unit of Statistical and Mathematical Sciences, University of Messina, Messina, Italy.
3. Diabetes Research Institute, San Raffaele Hospital, Milano, Italy.
4. Metabolic Disease and Genetics Unit, Giovanni XXIII Children's Hospital, Bari, Italy.
5. Department of Translational Medical Science, Section of Pediatrics, Regional Center of Pediatric Diabetes, Federico II University of Naples, Naples, Italy.
6. Pediatric Diabetes and Metabolic Disorders Unit, Regional Center for Pediatric Diabetes, University City Hospital, Verona, Italy.