1. Department of Human Pathology in Adult and Developmental Age “Gaetano Barresi,” University of Messina, Messina, Italy
2. Copenhagen University Hospital, Steno Diabetes Center Copenhagen, Herlev, Denmark
3. Department of Pediatrics, Institute of Medical Sciences, University of Opole, Opole, Poland
4. Pediatric Unit, Vithas Almería, Instituto Hispalense de Pediatría, Almería, Spain
5. Pediatric Diabetes and Metabolic Disorders Unit, Regional Center for Pediatric Diabetes, University City Hospital of Verona, Verona, Italy
6. Barbara Davis Center for Diabetes, University of Colorado Anschutz, Aurora, CO, USA