1. Department of Endocrinology and Diabetology, University of Leipzig, Hospital for Children and Adolescents, Leipzig, D-Germany
2. Center for Pediatric Research Leipzig, Department of Women and Child Health, Hospital for Children and Adolescents, University Hospitals Leipzig D-Germany
3. Institute of Epidemiology and Medical Biometry (ZIBMT), Ulm University, Ulm, D-Germany
4. German Center for Diabetes Research (DZD), Munich-Neuherberg, D-Germany
5. Department of Pediatrics and Adolescent Medicine, Division of Pediatric Endocrinology and Diabetes, Medical University Carl Gustav Carus, Dresden, D-Germany
6. Division of Pediatric Endocrinology and Diabetology, Department of Pediatrics, University Children’s Hospital Ukbb, Basel, Switzerland
7. Department of Paediatric Endocrinology and Diabetology, University Childrens Hospital Heidelberg, Heidelberg, D-Germany
8. Department of General Paediatrics, Neonatology and Paediatric Cardiology, University Children’s Hospital Düsseldorf, Düsseldorf, D-Germany
9. Department of Paediatric Endocrinology and Diabetology, Charité - Universitätsmedizin Berlin, Berlin, D-Germany
10. Childrens Hospital, Gemeinschaftsklinikum Mittelrhein, Kemperhof Koblenz, Koblenz, D-Germany
11. Diabetes Center Main Kinzig Main-Kinzig-Kliniken, Gelnhausen, D-Germany