1. Department of Paediatrics , University Clinic of Schleswig-Holstein, University of Luebeck , Luebeck , Germany
2. Institute for Epidemiology and Medical Biometry , ZIBMT, University Ulm , Ulm , Germany
3. Department of General Paediatrics, Neonatology and Paediatric Cardiology , University Children’s Hospital, Heinrich-Heine-University , Düsseldorf , Germany
4. Charite – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Sozialpädiatrisches Zentrum , Berlin , Germany
5. Paediatric and Adolescent Medical Practice , Witten , Germany
6. Department of Paediatrics , University of Leipzig, Faculty of Medicine , Leipzig , Germany
7. Department of Paediatrics , University Hospital St. Josef Bochum , Bochum , Germany
8. Department of Paediatrics , Kinderkrankenhaus Amsterdamer Straße , Cologne , Germany
9. Family Psychosomatics, Centre of Paediatric and Adolescent Medicine , Justus Liebig University , Giessen , Germany
10. Department of Paediatrics , Hospital Donaustadt , Vienna , Austria
11. German Centre for Diabetes Research (DZD) , Neuherberg , Germany