1. Institute of Epidemiology and Medical Biometry, Central Institute for Biomedical TechnologyUniversity of Ulm Ulm Germany
2. German Center for Diabetes Research (DZD) Neuherberg Germany
3. Department of Clinical Sciences and Community HealthUniversity of Milan Milan Italy
4. Department of Pediatric and Adolescent MedicineUniversity of Cologne Cologne Germany
5. Department of Pediatric and Adolescent MedicineElisabeth‐Hospital Essen Essen Germany
6. Department of PediatricsJustus‐Liebig‐University Giessen Giessen Germany
7. Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center ‐ University of Freiburg, Faculty of MedicineUniversity of Freiburg Freiburg Germany
8. Department of Child and Adolescent Health, CF Centre, Aarhus University Hospital Aarhus Denmark
9. Department of Children and Adolescent MedicineGynecological and Children Hospital Linz Austria
10. Division of Respiratory MedicineUniversity Children's Hospital Zürich Switzerland
11. Department of PediatricsWilhelminenspital Vienna Austria