1. Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
2. ZIBMT, Institute of Epidemiology and Medical Biometry, University of Ulm, Ulm, Germany
3. German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
4. Department of Pediatrics and Adolescent Medicine, University Medical Center Göttingen, Göttingen, Germany
5. Department of Pediatrics and Adolescent Medicine, Marienhospital GmbH, Gelsenkirchen, Germany
6. Department of Pediatrics, Hannover Medical School, Hannover, Germany
7. Catholic Children's Hospital Wilhelmstift, Hamburg, Germany
8. Pediatric and Adolescent Medicine, University Hospital, Martin-Luther University, Halle, Germany
9. Hildesheim Kinderarztpraxis, Hildesheim, Germany
10. Division for Paediatric Diabetology, University of Leipzig, Leipzig, Germany
11. Department of Pediatrics, Helios Kliniken Schwerin, Schwerin, Germany
12. Department of Pediatric and Adolescent Medicine, St. Vincenz Hospital, Paderborn, Germany
13. Diabetes Center for Children and Adolescents, Kinder- und Jugendkrankenhaus Auf der Bult, Hannover, Germany