1. University Children's Hospital, Tübingen, Germany;
2. Department of Pediatrics, Medical University of Innsbruck, Innsbruck, Austria;
3. Department of Endocrinology and Pediatrics, RWTH Aachen University, Aachen, Germany;
4. Endocrine Consulting Practitioner, Oldenburg, Germany;
5. Deutsches Diabetes Zentrum, Düsseldorf University, Düsseldorf, Germany;
6. Department of Epidemiology, University of Ulm, Ulm, Germany.