1. Institute of Epidemiology and Medical Biometry, ZIBMT, German Center for Diabetes Research (DZD), University of Ulm, Ulm, Germany
2. Institute for Biometrics and Epidemiology, German Diabetes Center, Leibniz Center at University of Düsseldorf, Düsseldorf, Germany
3. Children’s Hospital Chemnitz, Chemnitz, Germany
4. Clinic for Pediatrics, Protestant Hospital, Oberhausen, Germany
5. Pediatric Diabetes Practice, Mutterstadt, Germany
6. Pediatric Diabetes Practice, Reutlingen, Germany
7. Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics, University Hospital of Schleswig-Holstein, Campus Kiel/Christian-Albrechts University of Kiel, Kiel, Germany
8. Pediatric Practice, Rostock, Germany
9. Division of Pediatric Endocrinology and Diabetology, Department of Pediatrics, University of Lübeck, University Hospital of Schleswig-Holstein, Campus Lübeck, Lübeck, Germany