1. AUF DER BULT, Diabetes Center for Children and Adolescents, Hannover, Germany.
2. University of Ulm, Institute for Epidemiology and Medical Biometry, ZIBMT, Ulm, Germany.
3. German Center for Diabetes Research e.V., Munich-Neuherberg, Germany.
4. Centre Hospitalier de Luxembourg, DECCP, Luxembourg, Luxembourg.
5. Department of Paediatrics, Division of Paediatric Endocrinology, Diabetology & Metabolism, University of Bern, Bern University Hospital, Inselspital, Bern, Switzerland.
6. Sana Klinikum Lichtenberg, Diabetes Center for Children and Adolescents, Berlin, Germany.
7. Catholic Children's Hospital Wilhelmstift, Hamburg, Germany.
8. Pediatric Practice, Herford, Germany.
9. DRK Kliniken Berlin Westend, Diabetes Center for Children and Adolescents, Berlin, Germany.
10. Department of Pediatric and Adolescent Medicine, Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.