1. Department of Paediatrics; Katholisches Kinderkrankenhaus Wilhelmstift; Hamburg Germany
2. Department of Paediatrics; University of Bochum; Bochum Germany
3. Department of Paediatrics; Medical University of Innsbruck; Innsbruck Austria
4. Institute of Epidemiology and Medical Biometry, ZIBMT; University of Ulm; Ulm Germany
5. German Centre for Diabetes Research (DZD); Neuherberg Germany